Removing entries in audio compilation doesn't always clear their timing from progress bar
- start audio composition
- add 4 audio files
- select various tracks and drag them around a few times
- entries will be duplicated rather than moved (issue #35)
- delete one entry at a time until there are no more left
- notice that progress isn't clear
Tested on Xubuntu 20.04 with Xfce 0.6.2.