Pushing Chester (from Thaumic Additions: Reconstructed) into an twilight forest portal drops chester and spawns another on the other side of the portal. Will not dupe items held by chester.

To Reproduce

push chester into twilight forest portal

Screenshots

Modpack version v1.24.2

Thank you for the report!
I will try to find what I could do with that, but if it's not dupe items inside it's fine I believe.