So, for now any permissions, groups that were assigned after server start are not saved if rust server crashes/hardware reboots, etc.
Suggest saving these OnServerSave.
@Wulf, maybe any other ways?

Permissions already save on server save.

https://github.com/theumod/uMod.Rust/blob/oxide/src/RustCore.cs#L181-L189
https://github.com/theumod/uMod/blob/oxide/src/OxideMod.cs#L706-L709

just had this issue yesterday

Merged post

just tested myself
- removed myself from group
- crashed server
- started
- still has this group

If a server crashes, there's no way for a save to be done, it crashed. None of the normal shutdown process happens when you forcefull close a server or when it physically crashes. OnServerSave is triggered during graceful, normal shutdowns and on command.

fake call, sorry, i'm dumb, it's about "save"
All working on save!
strange, yesterday hadnt saved too many assigns on servers, indeed