Hello,

i noticed that some of Java programs are broken when using Qubes. This
issue happens a lot in Intellij IDEA (and it's forks), but AFAIK this
also happens in Eclipse and other Java programs.

#How to reproduce?
1. Install Idea
2. Start coding a Java program.
3. Press Ctrl + Space to complete your code
4. Probably nothing happens or if you are lucky you will see a
flashing dialog, before it disappears

#Workaround

Use a window manager for which you can define window rules, like KWin
(KDE default).

0. (In Kde open "Window Rules Settings")
1. Create a substring match to the Window Class i.e: "my-java-dev-vm"
2. Add a substring match for Windows Title i.e: for Idea it's "win"
3. Set in Arrangement & Access the checkbox "Keep above" to "Force" and "Yes"
4. In Appearance & Fixes set "No titlebar and frame" to  "Force" and "yes"
5. Set "Focus stealing prevention" to "Force" and "Extreme" (?)

For more Info about the bug see also
https://youtrack.jetbrains.com/issue/IDEA-101072 . Do not use
-Dide.expansion.hints.enabled=false

I think i had the same issue in other Java programs, at least in
Eclipse, but I'm not sure anymore.

kalkin-

This is the same or similar bug I started noticing with Firefox recently:

1. Install an extension like Colorific or Color Transform
2. Click on the down arrow next to the extension's toolbar button to get the menu
3. Hover over elements in the menu... Tooltips will be layered between the Firefox window and the main extension menu; As a result, they are mostly obscured but you can still see a segment of the tooltips peeking out.

Some extensions have all their documentation or important status information in the tooltips. I had to go to another computer to figure out how to use the above extensions.