Weird issues I've encountered in Rust

So 2 odd thing I’ve come across, hopefully the pictures work if not I’ll post my steam ID to see my screen shots below.
So #1: I’ve come across a few flying bears and wolfs
#2 In spain valley (May not apply to all servers) I spawned up and saw a hill that looked odd, turns out it was a giant dome on grass ( I had my grass enabled ) floating in the air, it looks like it was meant to be a hill but you can walk and see through it.

Turns out I have no clue how to add photos so just go here:

So confused.