my experience with companions is that he broke the bow (it needs to be repaired) i use to have that issue with Jasmine i solved it by giving her darts to throw since they don't need to be repaired
No, the bow was fine; if it is broken, he won't use it at all and he switches to his crossbow or a sword. This happens all the time with Julan - instead of using his marksman weapons from a distance, he gets right in the face of whoever we are fighting. Jasmine does the same thing, in fact... I'm always picking Constance's arrows out of their inventories, b/c she stays back and the J's are blocking her aim.
If there were ophthalmologists in Vvardenfell, I'd get their eyes checked...