I believe google uses the same frontend framework for everything which will legit leak memory and crash if you use ublock origin. I noticed is in the google cloud console lmao. I think there was some other thing where it implements an api that wasn't implemented on firefox, shadow dom v0 or something and for Firefox it uses a bunch of bloated shims instead but idk how accurate that is anymore. But yeah when i remove ublock my google cloud tabs stop leaking memory and crashing and perform a little better.
I should probably put together some evidence for my statements... Nah