fix thinking scroll

gui.py

@@ -698,12 +698,12 @@ class ChatWindow(QMainWindow):
             italic_format.setFontItalic(True)
             cursor.insertText(block["text"], italic_format)
         block["expanded"] = expanded
-        self.chat_view.moveCursor(QTextCursor.MoveOperation.End)
 
     def _collapse_open_thinking(self) -> None:
         if self._stream_thinking_id is not None:
             self._render_thinking(self._stream_thinking_id, expanded=False)
             self._stream_thinking_id = None
+            self.chat_view.moveCursor(QTextCursor.MoveOperation.End)
 
     def _on_chat_anchor_clicked(self, url: QUrl) -> None:
         href = url.toString()