AntacidChain's setlist.fm

To fix it you’ll need to temporarily disable the autocorrect feature when you make the edit. You can either just correct one and then report the other as a duplicate, or update all the individual listings as there’s only a few, whichever you prefer. Just be sure to include that source you posted. :)
https://www.setlist.fm/faq#autocorrections

It can depend, but more often than not (and in this case) yes, it would be assigned to the album.
This is because deluxe editions/reprints/reissues etc are all grouped under the same release group as the original album on musicbrainz.
As Who’s Gonna Take Us Alive as well as Street Girl had never been released prior to this deluxe edition they get assigned to Let It Be (which i've just done), if they'd been released prior on something then it can get complicated.

In case you're unaware, if there's ever any song you see that you think is assigned to the wrong release (or no release incorrectly) you can also submit a report. Just go the song in question, "wrong album assigned", select the correct album and a source showing why it's incorrect and we'll review it.