Created attachment 147470 [details]
Video demonstration

SUMMARY
In the General View effect, after closing a window with a single click, closing any other windows requires to double-click on their Close button.

STEPS TO REPRODUCE
1. Open multiple windows of any app of your preference
2. Trigger the General View effect
3. Hover on any of the previously opened windows, and on its upper-right corner, click its Close button.
4. Repeat for the remaining window(s) 

OBSERVED RESULT
After closing the first window with only a single click, to close the other one(s) is required to double-click their close button. 

EXPECTED RESULT
Workflow-consistency to close multiple windows. 

Operating System: Arch Linux
KDE Plasma Version: 5.24.3
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.3
Kernel Version: 5.16.14-arch1-1 (64-bit)
Graphics Platform: X11

Intel GPU