Apple can add feature after feature, but if Music continues to split albums without warning, it's close to useless. I can't curate a music library when I can't rely on my music not being jumbled around. Dropping music for licensing issues is one thing, but messing with metadata is beyond frustrating. For arbitrary reasons, Apple Music will: remove songs from albums and re-add them to your library as the "single" or "…
I've definitely seen this happen as well. It's extremely frustrating. Looking at your screenshots, I'm guessing these were all albums that were matched to your existing library? Just curious, looking for them, I see this: [1] seems ok here: https://music.apple.com/us/album/yung-gravity-ep/1500799523 Is there another version of it on AM? [2] I can't find on Apple Music - I'm guessing it's also an upload from your libr…
For [1] and [3], I added the album to my library as you see them in the links you provided. Then one day—poof! Albums are mangled, songs have been pulled out into "singles", or I find a new "compilation/greatest hits" version of the album in my library with a subset of the songs, and another subset in the original. Now I have to find all loose tracks, delete them—if I can find them all—then re-add the complete album.
The deluxe version of [4] has an extended track list, but I didn't add that version to my library. Apple Music thought it'd be a great idea to add the deluxe version, and split tracks between both albums so neither version is complete.