Describe the bug
When deleting a buffer in a tab and switching back to the "Scratch" page, the cursor does not appear until a forced UI update is triggered. The cursor should automatically reappear or be restored upon switching tabs.

Heynote_2.5.0_x86_64.AppImage

To Reproduce
Steps to reproduce the behavior:

1. Open two tabs: one labeled "Tab A" (containing content) and another labeled "Scratch".
2. Navigate to "Tab A" and perform an action that deletes its buffer (e.g., close the file or clear content).
3. Switch back to the "Scratch" tab.
4. Observe that the cursor is missing from the "Scratch" tab's input area.
5. Force a UI refresh ( click outside the editor), and the cursor reappears.

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop (please complete the following information):

• OS: Linux
• Version 4.2.2

Additional context
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