Bugs? (Can't place sign, walking bug, etc)

Hello, first timer here on the community board.
Recently ZoneManager started behaving in a way that I never saw before.

Environment
Rust 174 (2275.202.1)
Oxide 2.0.4879
ZoneManager: tested on v3.0.16 and v3.0.91

There are specific places inside zones where my character can't walk (e.g. when trying to walk past some of the bounds of a Box zone). Near those areas I also can't place any signs on walls, if I drop an item it will start flying away.

I don't know if this is a known bug/behaviour, but I can't figure out what's going on.
If it helps I can provide my .json file for zone configuration, as well as server logs. I also can provide access to the server if any mantainer wants to debug or simulate the problem there.

Please help :)

I'm having the same problems with ZoneManager plugin.
I already delete all files named ZoneManager from my server and installed plugin again and it was work fine, but after a few hours problems came back.
Has somebody some tip about it?

I'm getting this with a newly placed zone

Merged post

ok I figured it out, zones made using size instead of radius have this boundary bug

Merged post

Ok I've tested several versions all the way back to 3.0.16 and it affects all of them. Doesnt seem like anything made with size insatead of radius now