I had a Mp3 that I grouped to a video that I then cut in pieces and arranged nicely, then I re-saved the mp3 with different audio levels but same length in Audacity and in Kden it shrinks the audio to tiny bars that can't even be selected...

Tons of lost work .. have to re-take the mp4, group it again, and re-slice it and re-align it all over again with the new audio.
Has happened many times.. 20.04 version..

Most annoying bug ever..

https://i.ibb.co/bJz3SXt/image.png

Also, bug when cutting the grouped audio with video and joining together on different tracks but at the same cut point,
audio should be seamless, but it makes a squeak noise, like it jumps at high speed right at the join for a millisecond.
When rendered it's just a tiny blip, different than when previewing.