I mean specifically, because I have personally tested most of the big mods, especially bobs and angels, but also aai industry and pyanodons. I haven't tested omni, or anything like factorio extended or 5dims, so if you're using any of those...
EDIT: So it seems some other mod might be adding pipes to the vanilla t1 assembler, which the mini assembler then copies, but is not scaled properly to handle it (I have to apply those manually).
I applied the pipefix to mini assembler 1's, and there doesn't seem to be any visual changes; it still works the same as it did before, except now, it should overwrite any copied pipe data. So hopefully fixed in v5.0.5. Super emphasis on "hopefully"