SUMMARY

I like using notifications (pop-ups that appear at the bottom left of the system tray) for the copy handler. Instead I like the more traditional Windows style (regular window pop-up in the center).

One of the problems was that the regular style would stay hidden underneath the windows. https://old.reddit.com/r/kde/comments/off4fp/dolphin_when_copying_the_copy_dialog_doesnt_pop/

During some trial and error, there is a certain combination of options that allow the copy dialog to appear on top of the windows. However as noted in the reddit thread the options shouldn't have that effect.


STEPS TO REPRODUCE
1. System Settings -> Notifications
2. Show in notifications: Disable (notice that Keep popup open during progress is greyed out but enabled)
3. Copy a file with a window open

OBSERVED RESULT
Copy dialog is hidden behind the window

EXPECTED RESULT
Copy dialog appear on top of windows

SOFTWARE/OS VERSIONS
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

If you redo the steps to reproduce but this time disable the 'Keep popup open during progress' it will fix the issue.

1. System Settings -> Notifications
2. Keep popup open during progress: Disable
3. Show in notifications: Disable 
4. Copy a file with a window open

Apparently these options shouldn't fix the issue but they do.