Wintermute - Glitches galore

I've been playing TLD since a few months ago (off and on, interspersed with other games) but recently the game's glitches in Wintermute have been really ruining the experience for me. I was in episode two and my bear spear kept disappearing after one use, so I would die to the bear every time.

I skipped to episode three after that unpleasant glitch and the other day found the distress pistol and shells for it, put them in storage, did another part of the story, then came back to the storage place, and there were no distress pistol shells! I need them for the next part of the story, so this is doubly annoying.

I've read about some glitches on here and on the Steam boards, but most of those posts were from years ago. Can't believe none of these have been fixed. Anyone else have experience with this?