Similarly I rarely found sites that didn't work in Firefox, Google sites included (given they're tested more than the vast majority of sites I should hope so).

Similarly I rarely found sites that didn't work in Firefox, Google sites included (given they're tested more than the vast majority of sites I should hope so). That said I moved to Vivaldi since most of the useful addons I had became incompatible with FF post-Quantum (nor, last I checked, is there any longer a way to save webpages as MHTML which I use frequently and exclusively to save web page content). Though I sorely miss the ability to disable DirectWrite in Blink browsers, which allowed MacType to affect the font rendering for far better text legibility.