I’ve installed the latest Arduino GUI. It doesn’t work with my X11 setup. I’m using Linux with Xmonad (a tiling window manager) where very window runs in full screen mode. However, the Arduino UI behaves mad, to say the least. It only shows a tiny edit frame which cannot be resized within an otherwise full screen window. And if I click on a menu, it appears on some random screen position.
Edited to add: the same behavior happens with openjdk13, however, if I switch to Plasma or XFCE desktop, the UI works as it should.