Is your character proficient with a shortbow? That could help explain things..?
It'd help if you posted what the combat log says. I theorize that it will say "Damage Roll: 1", instead of "Damage Roll: 1 (1d6)" like it *should say. If so, it's probably a bug. I've encountered the same thing where attacking with a quarterstaff (1d6+str) damage just does 1 damage, and it doesn't look like a d6 was actually rolled...
