Arrow bug - repair it

Topic of Interest: 2 Bugs with arrow

Bugged flying arrow animation

Hello, when i choosed a bow and entered a game, while i shooting sometimes arrow is bugging :

http://screenshot.sh/m3IdoAdv7Xmxn

It changes directory randomly, so sometimes it works and sometimes not.

p.s. Sometimes arrow is flying to the ex. wall, and it change directory in 1 second, then it flying to the ex. barrels.

Another bug is a shooting players with bow.

When i saw a enemy team player at a platform surrounded with a hole i trying to kill him with bow, when i shoot that arrow it don't take any damage from a him, is this bug or?