resolve issues with new features

frontend/src/components/chat/ChatPanel.tsx

@@ -6,6 +6,7 @@ import ChatIcon from '@mui/icons-material/Chat';
 import Typography from '@mui/material/Typography';
 import Avatar from '@mui/material/Avatar';
 import Badge from '@mui/material/Badge';
+import Toolbar from '@mui/material/Toolbar';
 import Tooltip from '@mui/material/Tooltip';
 import List from '@mui/material/List';
 import ListItem from '@mui/material/ListItem';
@@ -39,6 +40,7 @@ const ChatPanelInner: React.FC = () => {
           overflowY: 'auto',
         }}
       >
+        <Toolbar />
         <IconButton onClick={() => setChatPanelOpen(true)} aria-label="Chat öffnen">
           <ChatIcon />
         </IconButton>
@@ -96,6 +98,7 @@ const ChatPanelInner: React.FC = () => {
         overflow: 'hidden',
       }}
     >
+      <Toolbar />
       <Box
         sx={{
           px: 1.5,