Belts ejecting items when they shouldn't

[Colorized]

When a belt funnel attempts to insert items into vaults from a belt: if the vault is full, there isn't a block at the end of the belt, and the belt is spinning fast enough, the belt will start ejecting its items.

Minecraft version: 1.21.1
Neoforge version: 21.1.201
Create version: 6.0.6

[VoidLeech]

Issue starts at 121 rpm