Yesterday I had to finish some audio and midi tracks before a closing deadline. I was using Audacity and Rosegarden. Both were suddenly broken ... help! I managed to fix both before the end of the day with help from the Open Source community.
Rosegarden started working again after updating ladspa-swh-plugins from fedora-testing.
Audacity started working again after downgrading soundtouch-1.9.2-3 back to soundtouch-1.4.0-13 (using "dnf downgrade soundtouch")
Working with cutting edge Open Source software can be fun, and the community is really helpful. But situations like this are not good for my health :-)
Other people having problem recently with Rosegarden or Audacity might want to try these workarounds.