Mirror separating from heating pad

[PLP]

My side mirror (left side, I mean, the correct side ) started shaking a bit. It was increasing over a short period of time.
I pulled the glass out just to find out everything is solid, except the glass started separating from the heating mat.

Any suggestion how to glue it back?

[PLP]

Did google just give me the answer?

Loctite Super Glue Glass.

Other suggestions?

I thought about polyurethane, but since it is heated the temperature changes may mess it up, plus adding extra layer is not a good idea.