I've only tried it once, so I can't say for sure.
In the previous version, when I performed edits that involved deleting playlists, switching the cover art to be displayed one after another, and then moving tracks between playlists, changing the playlist to be played, and changing the cover art to be displayed, MusicBee crashed with an OutOfMemory Error.
In the new version, the switches are now handled properly, and the program continues to run smoothly afterward.
Since the garbage collection has changed, could this be due to changes in memory handling?
I'm not entirely sure, but it's been a huge help for me.
Addendum
I will write down the editing tasks I always perform.
There are four albums, and all of them have different cover art. Each album contains six tracks.
Leave one track from each of the four albums and delete the rest from the playlist.
Copy the remaining tracks to another playlist and confirm that they have been copied.
Delete the four tracks (copied tracks) from the first playlist.
Select a completely different playlist and start playback.