To reproduce:
In KDE Plasma, open System Settings > Window Rules
Click “Add New…” button
Set “Window class (application)” to “Exact match” and value “java com.mojang.minecraft”
Set “Match whole window class” to option “Yes”
Set “Window types” to “All selected”(via opening the menu and checking “All window types”)
Click “Add Property…” button
Find “Fullscreen” and click it
Set “Fullscreen” to “Force” and option “No”
Click “Apply” button
Launch Minecraft and turn on “Exclusive Fullscreen”
Relaunch Minecraft
Turn on “Fullscreen”
Expected behaviour:
Nothing happens, or outputs a line of brief error log
Observed behaviour:
The log
Exclusive target [email protected] (24bit) on monitor 内置屏幕[0x00000003]([email protected] (24bit) at (0,0))(or similar, vary by hardware and operating system) floods the console until turning off “Fullscreen”.The window does not switch to fullscreen state. (This may be expected, as it's a system rule)
Environment
Linux lenovo 7.1.9-arch1-2; Qt 6.11.2; KDE Plasma 6.7.4
Attachments
Comments 2
Thank you for your report!
After consideration, the issue is being closed as Won't Fix.
Please note that this is not the same as Working as Intended, as this bug report correctly describes behavior in the game that might not be the intended or desirable behavior, but it will not be fixed right now. Sometimes, this is because the issue reported is minor and/or impossible to change without large architectural changes to the code base.
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This is a Window Rule instruction.