When I have a fullscreen app (e.g. game) on my primary screen, another app on the secondary screen focused (e.g. discord) and want to switch to yet another app (e.g. browser) that is behind the fullscreen app, it will not bring the app to the front.
Instead it stays behind the fullscreen app. Keyboard inputs do work though. To get the window to the front I have to focus the fullscreen app on the primary screen beforehand.
It does not matter if the fullscreen application is Wayland native, XWayland or has tearing enabled or disabled.
This is also not exclusive to games, as it also happens with e.g. videos in Brave, Firefox or mpv.
Is this a known issue or a configuration error on my part?
I couldn’t find anything online, but that might be because of my phrasing.
My system is as follows:
Arch with an nvidia gpu
I’ve been experiencing the same issue, I think only since I updated to plasma 6.6. I’m on Fedora 43 with an AMD gpu.
I’ve also noticed a (probably) related issue where often, I’ll be playing a game, I’ll try to alt+tab to a window on the same screen, and it won’t raise, nothing I do with alt+tab or any similar keybind will raise it, the only thing that has worked is moving my mouse to the other screen, clicking on the taskbar icon for the FS window, then clicking the icon for the non-FS window, which finally raises it. However, it’s pretty inconsistent whether this behavior happens or not.
I was looking around in system settings and noticed the “Multiscreen behavior: Separate screen focus” which was enabled by default, I’ve tried turning that off, but nothing changed, I also tried setting the Focus stealing prevention to “none”, but that also didn’t help.
Setting the window actions with Meta+ Middle Mouse to lower the window does nothing if I use it on the FS window, but does on any others. My only assumption is that something about having a window marked as fullscreen changes it’s ability to raise and lower
I can confirm that I have the same issue on Kubuntu 26.04. Plasma 6.6.4
Hey there. I’m also experiencing a similar issue, but in my case the fullscreen app on another monitor jumps forward, obscuring any other non-fullscreen apps that were in front of it. Note, the fullscreen app never grabs focus, it just jumps in front of all other apps. I have some questions relating to your issue.
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Have you ever used a “Global Menu” widget on any panels on your setup?
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Have you ever used Kvantum or any other “third party” customization apps?
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Do you use only build-in themes or themes that you made yourself or themes that you got from somewhere else?
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Ever taken dotfiles from anywhere?
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Ever used the “Panel Colorizer” widget?
I use Garuda Mokka Linux with an AMD GPU.
For me the issue has been fixed since between mid May and the beginning of June.
I had and still have Klassy and Apdatifier installed. No custom themes, dotfiles or similar things.
The issue you are describing is nothing I have experienced myself and my system is as up to date as can be. I’d recommend you to create a new thread for it though, as this might get more visibility.
Try to include since when you have this issue, which version of KDE you are currently using and all the custom stuff you might or might not have.