Miscellaneous: my mysteriously mysterious disease resist potions?!

[baub]

long story short, this is the first time i have logged in in like a week (since patch) and while 99% of the items in my inventory are acting like they should, my DR pots have evolved past stacking and now contain charges. i cannot find any patch notes and other potions (as seen in SS) are not acting like this so I believe this is a weird bug =x