If we go all the way back to @attishno1’s initial post in this thread, we see that the real problem was that the notification didn’t close after the compression had completed. If the notification had closed automatically (as it used to), then it would not have been clicked (and there would have been no crash).
This exact situation had already been reported as:
https://bugs.kde.org/show_bug.cgi?id=442774
- What I was doing when the application crashed:
I compressed a video file to 7zip format via context menu of Dolphin.
The progress bar of Plasma notification reached 100& but the notification did not disappeared
spontaneously. Then I clicked on stop button of the notification and Plasma notified Dolphin crash.
What got fixed in 21.08.3 was the crash. The notification still does not auto-close.
Does that mean the compression has finished? or not? We have to go and check the 7-zip before we can confidently dismiss the notification, by clicking “stop compressing”!