Apparently if you put in new fluid while ingots are still in, then the next iteration of cooling does not settle new ingots but stay in fluid form. Destroying the ingotcaster and replacing it yields in the same result again (1 set of 4 ingots, next are lost)

Example: https://imgur.com/a/43NcS

Will take a look and see what's going on. Edit: Seems I wasn't updating the canWork when the items change, but was when the fluid changes.

thank you :)

Should be fixed in 1.2.2a ;D

Hehe, that would of been because they only get told if they can work or not when their item/fluid inventory changes. Rather than checking all the time ;p You could of scooped some fluid out and put it back ;D

just wanted to give feedback:

it works, but you had to break them first :)
good thing I only had 36 ingot caster snickers

well this would have been probably too easy.. :D