Desktop draws, offset by the width of leftmost monitor

[William Morris]

Three monitor setup. Each monitor is a different size and resolution. Their placement is correct in Display Settings.

On login or after a crash, the screens redraw with the desktop offset by the width of the first monitor. Monitor #1 (smallest) gets 1/2 of #3, monitor #2 (largest) gets #1 and 1/2 of #2, monitor #3 (mid-size) gets 1/2 of #2 and #3.

However, mouse-clicks still register where they're supposed to, as if the screen is drawn correctly.

A screenshot shows the monitors drawn correctly. The attached image shows the center monitor, #2: the app launcher bar should be on the left edge, but instead there's the contents of monitor #1, then monitor #2.

Blanking the monitors or logging out/back in usually corrects the problem.

Operating System: Kubuntu 22.04
KDE Plasma Version: 5.24.6
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 5.15.0-50-generic (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Xeon® CPU E31225 @ 3.10GHz
Memory: 15.5 GiB of RAM
Graphics Processor: NV167

What I expected: not this.

What happened: ^^^that.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Libera.chat.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1993611/+editstatus and add the package name in the text box next to the word Package.

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