Is this on an ultra wide monitor?
If yes, what happens if you start "VaM (Config).bat", pick a 16:9 resolution without windowed mode?
It's rare, but sometimes I have a similar problem in 'windowed fullscreen' aka 'borderless' mode on a 16:9 monitor.
The title bar of the scene browser with the search bar is missing. I can only restart VAM to fix it.
Although on your wider screenshots it looks like there is even more missing - I guess it's a aspect ratio thing. Not sure.