Interesting! Thank you very much!

You do incredible work!

Will you provide a small explanation of what happened? I'm quite curious

Some additional testing:

Started a new game and consoled my way into the stuff i need. i could not replicate the bug there.

I also tried earlier version but my save could not be loaded. this however means that i've redownloaded the game several times since removing the only active mod so that ...

No current mods (Used Squeak Through, but disabled it when i noticed the potential bug)

Replication steps:
Place requester chest
request 20k iron to chest
it should fill rather slow (at most i've noticed about 40 on the way)

A requester chest requesting iron plates will only have ~30 "on the way" plates at any time, no matter the satisfaction as shown here: https://i.imgur.com/iItzHEs.png (My factory has well the required logistic and supply to fill it as shown here: https://i.imgur.com/BHFPsOC.png

seems to affect ...