https://www.youtube.com/watch?v=RbsVzA0roi4
Each time the stack in hand runs out there is a gap in the belt. Pretty sure that new since 1.0.
This is a different bug than explained here viewtopic.php?f=48&t=89209 (Belt has random gap even when stack doesn't run out) and here viewtopic.php?f=58&t=68992&hilit=belt (Belts have gaps when starting dragging on another belt or end dragging on another belt)
[1.0.0] Belt placing interpolation fails when stack in hand runs out
Re: [1.0.0] Belt placing interpolation fails when stack in hand runs out
There was gap filling logic rewrite for 1.1 so this and the other is most likely fixed. If it would not be fixed in 1.1 let me know and i will move this back to bug reports.