Bullseye cancels randomly

after bullseye successfully lands on any mob it randomly cancels if mob is hitted (before debuff timer reaches 0). the higher hit rate is the more often and faster this debuff is canceled.

for example- in group kartia its almost instantly cancels (out of 20 seconds debuff stays for like 3 sec max), because all party hits the mob. in solo kartia bullseye cancels not that often ( out of 20 seconds it stays for like 10 to 20 second) because only your self hitting the mob.
using skills seems to increase chance of bullseye cancelation.
here how it looks like (00:24)

 

when hitting you have the chance to lift this debuff. it was like that from the beginning of the god update and i guess it is not a bug. just same mechanics like stuns.

 

otherwise this debuff would too much powerful on pve. more than enough on pvp it stays to the end and even w/o it archer power is quite strong on any mobs/bosses, specially now when mindeye and rhapso are affected by coldown reduction buffs