Comment 6 for bug 1874272

I can confirm the problem. Including the delay in the cache.commit():

2020-04-26 13:05:59,023 INFO cache.commit()
2020-04-26 14:24:25,464 DEBUG cache.commit() returned None

For the obsolete packages
2020-04-26 14:32:27,989 DEBUG Start checking for obsolete pkgs
2020-04-26 14:53:12,608 DEBUG Finish checking for obsolete pkgs

Most of the packages report a "DEBUG package '<package name' produces an unwanted removal'gnome-software-plugin-snap', skipping