That's a different issue. I'm aware that belts stop when full. This belt should be unable to fill though, unless a yellow belt is exceeding it's max output. Or is it a case of items moving backwards/stopping momentarily on the belt when items are inserted into small gaps?

Vesion: 2.0.21 (build 80595 expansion, win64)
One of my space platforms keeps getting it's sushi belt stuck as it fills up. However, the belt has a double splitter on it to maintain slack. As I watch it, it eventually fills that, despite having a single yellow belt in and out, without any items ...