As a bit of background info, I'm a software developer myself by profession. I'm used to looking through logs, trying to find the problem, then trying to find the fix, then filing bugs directly... but from what I read, that's not how things are done here. In order to comply with the rules, I'll post my bugs here before the bug tracker.

SUMMARY
Applications launching on the wrong activity. The application should always launch on the activity it was started from, but it does not. Often times I will launch an application, then "meta+tab" over to another activity while it loads, which results in the application loading on the activity I'm currently viewing, instead of the one I started it on.

STEPS TO REPRODUCE
1. Launch application that takes a few seconds to start
2. Switch to another activity before it finishes starting

OBSERVED RESULT
Application starts on the current activity

EXPECTED RESULT
Application starts on the activity it was started from

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 21.04
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2
Kernel Version: 5.11.0-16-generic x64