I dunno if this has been discussed before (did quick search), but a persistent issue that I found is that if you are editing track metadata (comments in this case), while you have your tracks sorted by PLAYCOUNT, and the track being edited is playing, then the track will surely move up to a higher position along the browser to reflect its newly registered playcount +1, and all editing work you were doing will be left behind in the original track position in the browser, and end up immediately replacing existing tags in a totally different track which is now positioned where the track you were initially editing used to be. The previous comments for this unrelated track which now sits in the position you are editing will be lost.
This is quite annoying, and happens often because I believe people usually play tracks while they tag them, and for those situations in which you want to sort by playcount, the anomaly results in either lost work or erroneously tagged tracks.
I just don't remember if this should be logged somewhere else in this forum or a ticket has to be opened in order for devs to look into it. Anyway, I'll be glad to follow up if needed.
Best!