Shift Control V Sometimes Not Working in Beta 2.9.9.8

Using Shift Control V to paste and match style sometimes does nothing if Scrivener has been running a while (48 hours?). Control V still works although Paste with the shortcut of Control V on the Edit menu is grayed out. The Edit menu for Paste and Match Style is also grayed out despite having text on the clipboard.

Shutting down Scrivener and re-launching it resolves the issue.

Thanks,
Miik

Additional Information:

This may be linked to using the icon at the top right of the editor to split the screen. When I split the screen, Shift Control V still worked in both editors. I closed the lower (other) editor by clicking on the same icon on the top editor, and Shift Control V became disabled. When I split the screen again with that icon, it was again enabled. The quirk was that on closing the bottom editor once again the same way, Shift Control V remained enabled on the Edit menu and remained functional.

Thanks,
Miik