Blib

So what if ive snapped off one of the retaining flaps? Ive seen in the past when ive snapped them off before i could just plug it in, slap on some kapton tape and it was fine. This time i cant get the bottom of the digitizer to work on new glass. I put on the old glass and the bottom works just fine. the bottom flap is the one that broke, but why would the old glass work just fine, but the new glass does nothing on the bottom half?