I haven't been able to access my save with 90 hours played since last week, and read in another thread that updating to beta branch might make my world accessible again.
It did, but I loaded into my previously inaccessible galaxy as a new player in a mining drone.
Weird part is that I loaded into my creative galaxy just fine (loaded into it before updating to beta fine too). Or rather, every time I load (before & after beta update) into that creative galaxy, I'm always in the same ship, even though I leave that galaxy in different ships every time.