Editor keeps stealing focus

Argh.. It's driving me quite insane the past few days

The issue is I do something like control+shift+f to find a file, but while typing the file name, the focus is turned back to the editor, and it since I type quite fast, and have IdeaVIM plugin I usually screw up something in the source file.

I have to undo (which is annoying, how many times to press undo? did I undo all the crap??)

Then I control+shift_f again, and type SUPER SLOW . So I already tried putting this to the VM settings:

-DactionSystem.xWindow.remove.focus.from.nonFocusable.popups=false

And also I'm using this feature that puts the mouse pointer centered on the popup automatically.. is there anything else that I can try?

The version I use is 2018.01. The previous one was 2017.3 and 2017.3.4. Since the new version got a bit better at parsing my code base (which might be why it became a bit slower), so I'd rather not go back to the old version.

Kind regards,
Ray