Custom enchantment key in item kicks player

This worked at least on 1.20.4 without displaying in tooltip(due to enchantment not registered on the client), but now it doesn't work.

Enchantment code

Exception:
"Internal Exception: io.netty.handler.codec.DecoderException: Failed to decode packet 'clientbound/minecraft:container_set_content'"

Reproduce:
2024-06-06 14-06-29.mp4