Where Do I Complain?

This app has developed an annoying bug, and I can’t figure out how to address it. When I click on a link in an email, I am asked, every single time, which browser I want to use. There is a toggle marked, “Ask me every time,” that used to work but no longer functions. I toggle it off every time, but it’s back on the next time.

LanTok about Gmail - Email by Google, v5.0.180122