I'm using TabNine with Sublime Text 3 on Linux Mint (tested on XFCE and Cinnamon).
The auto-completion floating overlay will often get stuck on screen, on top of windows unrelated to source code. To hide it I need to bring up Sublime Text and point mouse away, then carefully put it back to background without triggering another overlay. It is very annoying and it made me disable TabNine plugin when I don't absolutely need it, which means I'm less likely to use it.
To me the solution would be to only show auto-completion overlays when text editor is in focus.
I'm using TabNine with Sublime Text 3 on Linux Mint (tested on XFCE and Cinnamon).
The auto-completion floating overlay will often get stuck on screen, on top of windows unrelated to source code. To hide it I need to bring up Sublime Text and point mouse away, then carefully put it back to background without triggering another overlay. It is very annoying and it made me disable TabNine plugin when I don't absolutely need it, which means I'm less likely to use it.
To me the solution would be to only show auto-completion overlays when text editor is in focus.