I noticed this first as IN, but have also seen this occur as other factions such as orks and SM.
It seems to be random (no specific trigger that i have been able to identify), but sometimes after using torpedos, once they come off cooldown they are no longer usable. I still have charges left, and do not have any weapons destroyed, but the ability button is greyed out and i cannot use them again for the rest of the match
Really frustrating and makes a lot of the IN ships a lot less useful.
Has anyone else run into this? Ill try to grab screenshots if possible.