Purple Science bug after upgrading Assemblers

[EnderTheXenocide]

I didn't catch video and fixed the problem before I thought about reporting it, but here's what happened that I think is a bug.

I had a requester chest requesting alien goo. 2 blue inserters feeding out of into into lvl 2 inserters (blue) making purple science. They were correctly outputting at that time.

I upgraded them to lvl 3 (yellow) assemblers as well as changing the inserters at the same time. but due to a mistake, i upgraded the INPUT inserters (alien goo to assembler) to stack inserters. I meant to upgrade output (purple science onto belt)

I did the changes of assembling machine and inserters in the middle of a production cycle while the buildings were running.

After the change, the output inserters (still blue inserters due to mistake) were now only putting 2 purple science instead of 10. It did this for a couple of cycles in a row while i clicked on things trying to see what in the world was going wrong.

To fix the problem I deleted the assembling building and inserters and rebuilt it the way i wanted (yellow assembling, stack inserter output, fast inserter input) and it worked completely fine after that.

I've never come across this problem before so this is probably a really minor thing but just thought I'd mention it.
Thanks.

[Loewchen]

Can you reproduce the issue? It sound more like a misconception than a bug.