When working with the Oil flask there are times where you throw in about three items only to see an error message pop up. When it is stops at this error message the recipe and reactions freeze, if you stuff anything more in there it continues off and either results in failure, dangerous failure or creates something. I could easily recreate this issue and post the error message if needed.
I ran into this myself but as of yesterday didn't encounter this problem.
Used both home made and toyfolly purchased oil. Is there maybe a merchant selling funky ones?
Is it only oils?
I can't say for sure it's only happened with oils for me, but that seems likely. I can report identical events, and all the oils I used were from the starting store in character creation.
Actually just found it myself.
Had no trouble using some ingredients, but using fish scales error came up.
Also with Bait. For some it seems to work, then it bugs, then it proceeds to register after the bug as "Too many ingredients". If needed can send the direct recipes that lead to the bugs.