Version 4152

Shift clicking a stack of, say, 4 long lived U235 waste results in it placing down one in the disposal drum while voiding the rest. Many other machines have problems with the shift-click handler, so going through and reworking all of them to behave properly (I see code to restrict putting non-battery (and certain swords,hint hint) items in the battery slot, but even shift-click puts them there all the time.

A weird thing I'm noticing: You can sometimes put in multiple items into one slot, I managed to put some (not decayed) long lived U235 waste in a stack with another of itself, forming a stack of two. I wonder if the slot guarding code is just doing something that's not being expected by forge?

Shift clicking for the disposal and spent fuel drums should be fixed now (turns out it wasn't even the forge version, instead I had COFH core installed on one machine which seems to fix this issue with ASM). I'm not exactly sure what's up with the other issue, clicking around in slots like a madman didn't really achieve anything. Perhaps you hit your scroll wheel which acts similar to shift-click?

Fairly certain I hadn't, but I also don't have cofh core present either. Either way, I'll test with the next version and report if I can replicate it

I finally nailed down the cause of why I could never manage to replicate this issue, apparently it has something to do with a change made for forge version 1614 (i.e. the latest one) while the NTM workspace until now has always used 1558.

Oh wow, what a bizzare forge bug to run into!

Well, glad we can finally get this one worked out now that you can replicate it in a devenv

Tested it, behavior now correctly splits it amongst multiple slots. I'll close this for now, with a note that I didn't test shift clicking more items than there are available slots in the thing, but that's a slightly less common testcase