I have several monitors. I have a problem on Wayland that when I go to overview, the main monitor does not show the windows that are on that monitor. On other monitors everything is displayed correctly. The interesting thing is that the problem only appears on Wayland. On X11 everything works correctly
Sorry for the second photo, but I didn’t find another way to take a screenshot in overview
You can take a screenshot of the overview by either pressing the Spectacle “take full screen screenshot” shortcut, or by starting Spectacle from the main menu, setting it to take a screenshot after a few seconds delay, then pressing the “full screen” button, triggering overview and waiting.
The behaviour you describe sounds like a bug. I suggest reporting it on bugs.kde.org
On my PC the problem is solved. The reason was duplicating the main screen on a second monitor (PiKVM). After disabling mirroring of the second monitor, overview worked correctly again
