Item User deletes items when fed with the Vanilla Hopper

[shermanflima]

Minecraft Version: 1.20.1

Forge Version: 47.3.0

Mod Version: 1.13.3 FLIB 0.0.14

Single Player or Server: Single Player

Describe problem (what you were doing; what happened; what should have happened):

I found this bug while playing SkyFactory 5, then tested it on a new instance with just Cyclic and FLIB.
The Item User deletes items when fed with the Vanilla Hopper, works fine with the Cyclic Wooden Hopper, Golden Hopper, and Item Cable.
This bug occurs in version 1.13.x of the mod. It does not occur in previous versions.

Log file link:

Video/images/gifs (direct upload or link):

Bug.Cyclic.Item.User.deleting.items.mp4

[Dutchs]

This also happens with the Crushing Macerator, items being fed into the block from a hopper will be voided if the input is completely full or if a different item is attempted to be inserted that would not fit.