I'm using XFCE's filemanager Thunar and am witnessing something strange when using xmonad. I would like to know if this is a problem with xmonad, or with my system. So if anyone uses Thunar could you please check if this happens? I tried this with my own config, but it happens with no config (=default one) as well. Steps to reproduce: 1. Start xmonad. 2. Start Thunar. 3. Move Thunar to a different workspace. 4. Observe Thunar's idling CPU state in htop or similar. On my PC it is now idling at 3-7%. 5. Switch to workspace where Thunar now is and change Thunar to a different directory. 6. Check CPU idling again. It is now 0% as expected. Strange thing is that just focusing Thunar on the second workspace isn't enough; you have to change the directory. I have no idea what causes this strange behavior. I tried other (tiling) window managers and they all start idling Thunar at 0% as expected. Anybody have an insight?