So i use VSC to edit my config and iv been away from HA for a while and came back to it to discover that the highlighted files appear and disappear from the folders tab in VSC every second. Its making it a nightmare to select and edit other files as the list keeps jumping up[ and down. Also its an eye strain.
The files themselves are temp files for sqlite. This will always happen unless you ignore them like @makai said or switch to another database using recorder.