When you fire an arrow from a bow, and later pick up the arrow, you will not have one but two, and so on forever. For each firing an arrow you will get another one. I have microsoft lumia 540 with windows 8.1 and this issue is also on android
MCPE-10311
Unlimited arrows
Resolved
Duplicate
0
(Unassigned)
Unconfirmed
Phone - Windows Phone - Other (Specify in description)
Windows Phone 8.1
0.12.1 Beta 11
Retrieved
This bug has already been reported! Please go here -> (MCPE-8768) and make sure to do a quick search for your bug before just writing a duplicate ticket. Currently 51% of resolved tickets have been duplicates!