To throw another spanner into the mix, Jeremy Crawford Tweeted about the spell way back in 2015.
I really wish this answer was in the Sage Advice Compendium, but this is enough for me to discard the idea of tiny hut as a bunker without feeling like I'm spoiling designer intent or something. You've got to jump in and out of it now in order to make your attacks.
Sounds like a reasonable ruling, although one I'd cover with my group when they get the spell. I'd personally describe it as requiring a bit of a "push" to get through the wall. Fire an arrow? Well, it hits the wall, slows down and falls harmlessly to the floor.