What happened?

Basically the mod breaks blocks on vanilla servers.
This bug can be found in multiple mods like: traverse, dawn api, cinderscapes, blockus, terrestria

Fabric API version

v5.0.0+1.20.1

Relevant log output

No response

look at Brandcraf06/Blockus#301

I also had this problem.

This was already reported here. See #34

I don't intend people to play with my mods on servers... where my mods aren't installed.
This issue should be caused by something greater than the Dawn API, maybe at Fabric's level.