User blog comment:Arcorior/Can't Swim Even Through Full Restart/@comment-68.238.223.180-20161215203639/@comment-28435078-20161215210329

I ran into this issue in my early days, different though, I couldn't change the items I was holding in hand and in assigned number slot, actually I could, but I was still holding the thing. This happened because I got into a Seamoth after I spawned it in and the window wasn't done being built so it glitches my game. I waited over a month until the next update came out with a fix.