Leomund's Tiny Hut

I play Pathfinder, so this is a new one to me. Am I understanding this right? It's a bubble shield, with no weaknesses, that lasts 8 hours, that nothing can get inside (not even if it were covered in lava), but objects and characters can freely pass out of? So, does that mean people inside can use ranged attacks all they want, without anything being able to attack them? And this is a level three spell?!

Yea, that seems crazy broken.

Edit: Now I see why I haven't heard of it even though it's also in Pathfinder, it is WAY toned down in PF. DnDs version is insane.