Steam does have a 1.01 patch, which fixes lots of small issues, espeically with saves:
"Save system updated. We have rewritten part of our save system to reduce the amount of issues with the progress loss. The problem is still there but it should happen less often now
Shared stash will properly save the items now after the save system update
Tutorial system received some fixes, people will no longer get stuck if they skipped the return to tavern part
Summoned minion mana return will no longer cause any issues with other actions requiring mana to use
Crystal objective prop interactions with multiple skills is fixed, some of them were stealthy and while they were not seen as soon as the problem occured, were messing with the future interactions along the line
Preliminary fixes on skill exp book issues
Level reward boxes now properly scale with the dungeon level
Spike trap/Drain floor will no longer damage person who is attacking an enemy standing on those
Collision issues fixed with big 2x2 monsters"
So get with the game, GOG, and make the patch/hotfix available here, because I'm tired of the stuff disappearing in my shared stash every time i want to play again.
I just bought this yesterday, and it's been fun, but if GOG doesn't get the patch soon, I'll refund it and go buy it on Steam.