Hi Abbot, thanks for reporting this in.
Did saving / restarting the game solve the inventory count again? As a temporary workaround at least.
Will look into fixing this asap as soon as I'm back at my PC after christmas.
Always happy to help.
Unfortunately, restarting didn't help. Not too worried about it, was just a game for relics.
Thanks for looking into it!
Sorry for late reply, but was able to reproduce and fix the issue! Yay :-)
Fix will be part of the next update.
Thanks for reporting!