diff --git a/rsconcept/frontend/src/app/ErrorFallback.tsx b/rsconcept/frontend/src/app/ErrorFallback.tsx
index c55f2af0..4447a277 100644
--- a/rsconcept/frontend/src/app/ErrorFallback.tsx
+++ b/rsconcept/frontend/src/app/ErrorFallback.tsx
@@ -5,7 +5,7 @@ import Button from '../components/ui/Button';
 
 function ErrorFallback({ error, resetErrorBoundary }: FallbackProps) {
   return (
-    <div className='flex flex-col items-center antialiased clr-app' role='alert'>
+    <div className='flex flex-col gap-3 items-center antialiased clr-app' role='alert'>
       <h1>Что-то пошло не так!</h1>
       <Button onClick={resetErrorBoundary} text='Попробовать еще раз' />
       <InfoError error={error as Error} />
diff --git a/rsconcept/frontend/src/components/info/InfoError.tsx b/rsconcept/frontend/src/components/info/InfoError.tsx
index e33544cd..b6cf1b99 100644
--- a/rsconcept/frontend/src/components/info/InfoError.tsx
+++ b/rsconcept/frontend/src/components/info/InfoError.tsx
@@ -1,11 +1,9 @@
 import axios, { type AxiosError } from 'axios';
 import clsx from 'clsx';
 
-import { external_urls } from '@/utils/constants';
 import { isResponseHtml } from '@/utils/utils';
 
 import PrettyJson from '../ui/PrettyJSON';
-import TextURL from '../ui/TextURL';
 import AnimateFade from '../wrap/AnimateFade';
 
 export type ErrorData = string | Error | AxiosError | undefined;
@@ -70,12 +68,12 @@ function InfoError({ error }: InfoErrorProps) {
         'select-text'
       )}
     >
-      <p className='font-normal clr-text-default'>
-        Пожалуйста сделайте скриншот и отправьте вместе с описанием ситуации на почту{' '}
-        <TextURL href={external_urls.mail_portal} text='portal@acconcept.ru' />
+      <div className='font-normal clr-text-default'>
+        <p>Пожалуйста сделайте скриншот и отправьте вместе с описанием ситуации на почту portal@acconcept.ru</p>
         <br />
-        Для продолжения работы перезагрузите страницу
-      </p>
+        <p>Для продолжения работы перезагрузите страницу</p>
+      </div>
+
       <DescribeError error={error} />
     </AnimateFade>
   );
diff --git a/rsconcept/frontend/src/components/ui/SelectTree.tsx b/rsconcept/frontend/src/components/ui/SelectTree.tsx
new file mode 100644
index 00000000..0bc0a810
--- /dev/null
+++ b/rsconcept/frontend/src/components/ui/SelectTree.tsx
@@ -0,0 +1,112 @@
+import clsx from 'clsx';
+import { AnimatePresence, motion } from 'framer-motion';
+import { useCallback, useLayoutEffect, useMemo, useState } from 'react';
+
+import { animateSideAppear } from '@/styling/animations';
+import { globals } from '@/utils/constants';
+
+import { IconDropArrow, IconPageRight } from '../Icons';
+import { CProps } from '../props';
+import MiniButton from './MiniButton';
+import Overlay from './Overlay';
+
+interface SelectTreeProps<ItemType> extends CProps.Styling {
+  items: ItemType[];
+  value: ItemType;
+  setValue: (newItem: ItemType) => void;
+  getParent: (item: ItemType) => ItemType;
+  getLabel: (item: ItemType) => string;
+  getDescription: (item: ItemType) => string;
+  prefix: string;
+}
+
+function SelectTree<ItemType>({
+  items,
+  value,
+  getParent,
+  getLabel,
+  getDescription,
+  setValue,
+  prefix,
+  ...restProps
+}: SelectTreeProps<ItemType>) {
+  const foldable = useMemo(
+    () => new Set(items.filter(item => getParent(item) !== item).map(item => getParent(item))),
+    [items, getParent]
+  );
+  const [folded, setFolded] = useState<ItemType[]>(items);
+
+  useLayoutEffect(() => {
+    setFolded(items.filter(item => getParent(value) !== item && getParent(getParent(value)) !== item));
+  }, [value, getParent, items]);
+
+  const onFoldItem = useCallback(
+    (target: ItemType, showChildren: boolean) => {
+      setFolded(prev =>
+        items.filter(item => {
+          if (item === target) {
+            return !showChildren;
+          }
+          if (!showChildren && (getParent(item) === target || getParent(getParent(item)) === target)) {
+            return true;
+          } else {
+            return prev.includes(item);
+          }
+        })
+      );
+    },
+    [items, getParent]
+  );
+
+  const handleClickFold = useCallback(
+    (event: CProps.EventMouse, target: ItemType, showChildren: boolean) => {
+      event.preventDefault();
+      event.stopPropagation();
+      onFoldItem(target, showChildren);
+    },
+    [onFoldItem]
+  );
+
+  return (
+    <div {...restProps}>
+      <AnimatePresence initial={false}>
+        {items.map((item, index) =>
+          getParent(item) === item || !folded.includes(getParent(item)) ? (
+            <motion.div
+              tabIndex={-1}
+              key={`${prefix}${index}`}
+              className={clsx(
+                'pr-3 pl-6 py-1',
+                'cc-scroll-row',
+                'clr-controls clr-hover',
+                'cursor-pointer',
+                value === item && 'clr-selected'
+              )}
+              data-tooltip-id={globals.tooltip}
+              data-tooltip-content={getDescription(item)}
+              onClick={() => setValue(item)}
+              initial={{ ...animateSideAppear.initial }}
+              animate={{ ...animateSideAppear.animate }}
+              exit={{ ...animateSideAppear.exit }}
+            >
+              {foldable.has(item) ? (
+                <Overlay position='left-[-1.3rem]' className={clsx(!folded.includes(item) && 'top-[0.1rem]')}>
+                  <MiniButton
+                    tabIndex={-1}
+                    noPadding
+                    noHover
+                    icon={!folded.includes(item) ? <IconDropArrow size='1rem' /> : <IconPageRight size='1.25rem' />}
+                    onClick={event => handleClickFold(event, item, folded.includes(item))}
+                  />
+                </Overlay>
+              ) : null}
+              {getParent(item) === item ? getLabel(item) : `- ${getLabel(item).toLowerCase()}`}
+            </motion.div>
+          ) : null
+        )}
+      </AnimatePresence>
+    </div>
+  );
+}
+
+export default SelectTree;
diff --git a/rsconcept/frontend/src/components/ui/Tooltip.tsx b/rsconcept/frontend/src/components/ui/Tooltip.tsx
index cd0d4c42..627894d7 100644
--- a/rsconcept/frontend/src/components/ui/Tooltip.tsx
+++ b/rsconcept/frontend/src/components/ui/Tooltip.tsx
@@ -32,7 +32,13 @@ function Tooltip({
       delayShow={1000}
       delayHide={100}
       opacity={0.97}
-      className={clsx('overflow-auto sm:overflow-hidden overscroll-contain', 'border shadow-md', layer, className)}
+      className={clsx(
+        'overflow-auto sm:overflow-hidden overscroll-contain',
+        'border shadow-md',
+        'text-balance',
+        layer,
+        className
+      )}
       classNameArrow={layer}
       style={{ ...{ paddingTop: '2px', paddingBottom: '2px' }, ...style }}
       variant={darkMode ? 'dark' : 'light'}
diff --git a/rsconcept/frontend/src/pages/ManualsPage/TopicsDropdown.tsx b/rsconcept/frontend/src/pages/ManualsPage/TopicsDropdown.tsx
index bc05cfda..8fb9f4d1 100644
--- a/rsconcept/frontend/src/pages/ManualsPage/TopicsDropdown.tsx
+++ b/rsconcept/frontend/src/pages/ManualsPage/TopicsDropdown.tsx
@@ -6,12 +6,13 @@ import { useCallback } from 'react';
 
 import { IconMenuFold, IconMenuUnfold } from '@/components/Icons';
 import Button from '@/components/ui/Button';
+import SelectTree from '@/components/ui/SelectTree';
 import { useConceptOptions } from '@/context/OptionsContext';
 import useDropdown from '@/hooks/useDropdown';
-import { HelpTopic } from '@/models/miscellaneous';
+import { HelpTopic, topicParent } from '@/models/miscellaneous';
 import { animateSlideLeft } from '@/styling/animations';
-
-import TopicsTree from './TopicsTree';
+import { prefixes } from '@/utils/constants';
+import { describeHelpTopic, labelHelpTopic } from '@/utils/labels';
 
 interface TopicsDropdownProps {
   activeTopic: HelpTopic;
@@ -22,7 +23,7 @@ function TopicsDropdown({ activeTopic, onChangeTopic }: TopicsDropdownProps) {
   const menu = useDropdown();
   const { noNavigation, calculateHeight } = useConceptOptions();
 
-  const selectTheme = useCallback(
+  const handleSelectTopic = useCallback(
     (topic: HelpTopic) => {
       menu.hide();
       onChangeTopic(topic);
@@ -65,7 +66,15 @@ function TopicsDropdown({ activeTopic, onChangeTopic }: TopicsDropdownProps) {
         animate={menu.isOpen ? 'open' : 'closed'}
         variants={animateSlideLeft}
       >
-        <TopicsTree activeTopic={activeTopic} onChangeTopic={selectTheme} />
+        <SelectTree
+          items={Object.values(HelpTopic).map(item => item as HelpTopic)}
+          value={activeTopic}
+          setValue={handleSelectTopic}
+          prefix={prefixes.topic_list}
+          getParent={item => topicParent.get(item) ?? item}
+          getLabel={labelHelpTopic}
+          getDescription={describeHelpTopic}
+        />
       </motion.div>
     </div>
   );
diff --git a/rsconcept/frontend/src/pages/ManualsPage/TopicsStatic.tsx b/rsconcept/frontend/src/pages/ManualsPage/TopicsStatic.tsx
index c63b93e3..58f94d6c 100644
--- a/rsconcept/frontend/src/pages/ManualsPage/TopicsStatic.tsx
+++ b/rsconcept/frontend/src/pages/ManualsPage/TopicsStatic.tsx
@@ -1,9 +1,10 @@
 import clsx from 'clsx';
 
+import SelectTree from '@/components/ui/SelectTree';
 import { useConceptOptions } from '@/context/OptionsContext';
-import { HelpTopic } from '@/models/miscellaneous';
-
-import TopicsTree from './TopicsTree';
+import { HelpTopic, topicParent } from '@/models/miscellaneous';
+import { prefixes } from '@/utils/constants';
+import { describeHelpTopic, labelHelpTopic } from '@/utils/labels';
 
 interface TopicsStaticProps {
   activeTopic: HelpTopic;
@@ -13,7 +14,14 @@ interface TopicsStaticProps {
 function TopicsStatic({ activeTopic, onChangeTopic }: TopicsStaticProps) {
   const { calculateHeight } = useConceptOptions();
   return (
-    <div
+    <SelectTree
+      items={Object.values(HelpTopic).map(item => item as HelpTopic)}
+      value={activeTopic}
+      setValue={onChangeTopic}
+      prefix={prefixes.topic_list}
+      getParent={item => topicParent.get(item) ?? item}
+      getLabel={labelHelpTopic}
+      getDescription={describeHelpTopic}
       className={clsx(
         'sticky top-0 left-0',
         'w-[14.5rem] cc-scroll-y',
@@ -24,9 +32,7 @@ function TopicsStatic({ activeTopic, onChangeTopic }: TopicsStaticProps) {
         'select-none'
       )}
       style={{ maxHeight: calculateHeight('2.25rem + 2px') }}
-    >
-      <TopicsTree activeTopic={activeTopic} onChangeTopic={onChangeTopic} />
-    </div>
+    />
   );
 }
 
diff --git a/rsconcept/frontend/src/pages/ManualsPage/TopicsTree.tsx b/rsconcept/frontend/src/pages/ManualsPage/TopicsTree.tsx
deleted file mode 100644
index 2898c4d3..00000000
--- a/rsconcept/frontend/src/pages/ManualsPage/TopicsTree.tsx
+++ /dev/null
@@ -1,127 +0,0 @@
-'use client';
-
-import clsx from 'clsx';
-import { AnimatePresence, motion } from 'framer-motion';
-import { useCallback, useLayoutEffect, useState } from 'react';
-
-import { IconDropArrow, IconPageRight } from '@/components/Icons';
-import { CProps } from '@/components/props';
-import MiniButton from '@/components/ui/MiniButton';
-import Overlay from '@/components/ui/Overlay';
-import { foldableTopics, HelpTopic, topicParent } from '@/models/miscellaneous';
-import { animateSideAppear } from '@/styling/animations';
-import { globals, prefixes } from '@/utils/constants';
-import { describeHelpTopic, labelHelpTopic } from '@/utils/labels';
-
-interface TopicsTreeProps {
-  activeTopic: HelpTopic;
-  onChangeTopic: (newTopic: HelpTopic) => void;
-}
-
-function TopicsTree({ activeTopic, onChangeTopic }: TopicsTreeProps) {
-  const [topicFolded, setFolded] = useState<Map<HelpTopic, boolean>>(
-    new Map(
-      Object.values(HelpTopic).map(value => {
-        const topic = value as HelpTopic;
-        return [topic, true];
-      })
-    )
-  );
-
-  useLayoutEffect(() => {
-    setFolded(
-      new Map(
-        Object.values(HelpTopic).map(value => {
-          const topic = value as HelpTopic;
-          return [
-            topic,
-            topicParent.get(activeTopic) !== topic && topicParent.get(topicParent.get(activeTopic)!) !== topic
-          ];
-        })
-      )
-    );
-  }, [activeTopic]);
-
-  const onFoldTopic = useCallback(
-    (target: HelpTopic, showChildren: boolean) => {
-      if (topicFolded.get(target) === !showChildren) {
-        return;
-      }
-      setFolded(
-        new Map(
-          Object.values(HelpTopic).map(value => {
-            const topic = value as HelpTopic;
-            if (topic === target) {
-              return [topic, !showChildren];
-            }
-            if (
-              !showChildren &&
-              (topicParent.get(topic) === target || topicParent.get(topicParent.get(topic)!) === target)
-            ) {
-              return [topic, true];
-            }
-            const oldValue = topicFolded.get(topic)!;
-            return [topic, oldValue];
-          })
-        )
-      );
-    },
-    [topicFolded]
-  );
-
-  const handleClickFold = useCallback(
-    (event: CProps.EventMouse, topic: HelpTopic, showChildren: boolean) => {
-      event.preventDefault();
-      event.stopPropagation();
-      onFoldTopic(topic, showChildren);
-    },
-    [onFoldTopic]
-  );
-
-  return (
-    <AnimatePresence initial={false}>
-      {Object.values(HelpTopic).map((topic, index) => {
-        const parent = topicParent.get(topic);
-        if (parent !== topic && topicFolded.get(topicParent.get(topic)!)) {
-          return null;
-        }
-        const isFoldable = !!foldableTopics.find(id => id === topic);
-        const isFolded = topicFolded.get(topic)!;
-        return (
-          <motion.div
-            tabIndex={-1}
-            key={`${prefixes.topic_list}${index}`}
-            className={clsx(
-              'pr-3 pl-6 py-1',
-              'cc-scroll-row',
-              'clr-controls clr-hover',
-              'cursor-pointer',
-              activeTopic === topic && 'clr-selected'
-            )}
-            data-tooltip-id={globals.tooltip}
-            data-tooltip-content={describeHelpTopic(topic)}
-            onClick={() => onChangeTopic(topic)}
-            initial={{ ...animateSideAppear.initial }}
-            animate={{ ...animateSideAppear.animate }}
-            exit={{ ...animateSideAppear.exit }}
-          >
-            {isFoldable ? (
-              <Overlay position='left-[-1.3rem]' className={clsx(!isFolded && 'top-[0.1rem]')}>
-                <MiniButton
-                  tabIndex={-1}
-                  noPadding
-                  noHover
-                  icon={!isFolded ? <IconDropArrow size='1rem' /> : <IconPageRight size='1.25rem' />}
-                  onClick={event => handleClickFold(event, topic, isFolded)}
-                />
-              </Overlay>
-            ) : null}
-            {topicParent.get(topic) === topic ? labelHelpTopic(topic) : `- ${labelHelpTopic(topic).toLowerCase()}`}
-          </motion.div>
-        );
-      })}
-    </AnimatePresence>
-  );
-}
-
-export default TopicsTree;
diff --git a/rsconcept/frontend/src/styling/animations.ts b/rsconcept/frontend/src/styling/animations.ts
index 61dce04c..e6b141e6 100644
--- a/rsconcept/frontend/src/styling/animations.ts
+++ b/rsconcept/frontend/src/styling/animations.ts
@@ -210,22 +210,32 @@ export const animateSideView = {
 
 export const animateSideAppear = {
   initial: {
-    clipPath: 'inset(0% 100% 0% 0%)'
+    height: 0,
+    opacity: 0
   },
   animate: {
-    clipPath: 'inset(0% 0% 0% 0%)',
+    height: 'auto',
+    opacity: 1,
     transition: {
-      type: 'spring',
-      bounce: 0,
-      duration: 0.3
+      height: {
+        duration: 0.25
+      },
+      opacity: {
+        delay: 0.25,
+        duration: 0
+      }
     }
   },
   exit: {
-    clipPath: 'inset(0% 100% 0% 0%)',
+    height: 0,
+    opacity: 0,
     transition: {
-      type: 'spring',
-      bounce: 0,
-      duration: 0.3
+      height: {
+        duration: 0.25
+      },
+      opacity: {
+        duration: 0
+      }
     }
   }
 };