So far the problems I have ran into are,
Bugs being underground
Ant eggs never spawning
Permanently stuck to webs
Saved files disappearing
Thrown items falling throw floors and trees
Server crashes from large lag spikes while putting up spike strips.
Static in the game volume, (this goes for title menu, game audio, music, speaking etc.)
Floating bases, (removed a floor connecting our base to a branch and then whole base stayed together and was floating in mid air, had to jump to removed each thing separately.)
Blue berries not showing up in the right locations for friends in your session.
Once I ran into all tapes and a larva dagger floating in the water on another players session but noone else could see it.
Broken spawns. (The wolf spider at oak tree never spawns anymore.)