Glass Attack bug with the Tribalman's Shiv

Dualie Woolie

I enjoy medical field
Is this a bug or what? Everytime I shoot the glass by accident trying to aim for headshots, I bleed for 5 seconds. I am guessing it is with shiv equipped. The bleed lasts for so long, you essentially at only 25 percent health by the end of it's duration.

Can someone look into this?