KDE Plasma task switcher weird behaviour

[dubdinox]

Hello! Recently, the task switcher in Plasma started acting strangely on my machine.
For example:
I have open windows in this order: 1, 2, 3, 4
When I press Alt+Tab, I expect the new order to be 2, 1, 3, 4
When I press Alt+Tab again, I expect the order to be 1, 2, 3, 4 again, and so on...
But instead, sometimes, when I press Alt+Tab, the order changes from 1, 2, 3, 4 to 1, 3, 4, 2.
My Plasma version is 6.1.5 (kde-plasma/plasma-meta package)
What should I do?