Saving right after a friend appeared no longer writes their stand-in, light or power armor frame copy into the save: everything still waiting to be deleted is deleted before the save.
The host answers a player's requests for the whole session state from a bucket of three (a join, a reload and one more), refilled one every ten seconds, instead of up to four every second. A client asking without pause could make the host upload its whole session several times a second.
The compass posts nothing to the UI thread when there is nobody to show and no marker showing (main menu, loading, playing alone).
Protocol 26, as 0.8.0 to 0.8.3. Newer builds are on GitHub first; Nexus follows less often.