When I go to the nether in Pocket Edition my bow and crossbows show up in my inventory and HUD bar but when I put them in my hand their still in the slot but its not on my hand. When I'm on fire there is a hole in the fire shaped like a unloaded bow or crossbow. I saw the same issue before the nether update on my ipad iOS 9.35 but that was fixed with the nether update. I'm not sure if this is an internet issue because our internet router has a history of not giving full internet bars after looking closer I found it was only with enchanted bows and crossbows