Sharpshooter Death Strike dmg buff not working

Hello i dont know if i m the only one with that bug but every time i use my last rush skill i should get a dmg buff at the begging it worked and i could see the buff on my screen but after 1-2days it dosnt show up anymore the Hawk meter recovery stills works anyone who can help me ?

I think so, i tried it a bit with level 2 death strike and the dmg its the same.