[faitswulff]

I've been using Firefox Nightly as my daily browser for a while and I am beginning to notice more and more websites breaking on it - mostly Google services, although Facebook as well, recently, too. I know it's complicated by the fact that I'm on the Nightly channel, but has anyone else noticed an increase in sites that are incompatible with FF?

[Silhouette]

has anyone else noticed an increase in sites that are incompatible with FF?

Yes, but I'm not sure it's just Firefox. I suspect a significant number of sites are now being developed and tested only with Chrome, using Google's developer tools and recommended practices and browser feature set. Unfortunately, those things may not be supported or work well on other browsers, and if you don't choose carefully and test properly...

[ethagnawl]

I've noticed this while using the last few stable releases of FF (on Debian 9.4, on the odd chance it's relevant). Off the top of my head, the (popular) sites I regularly have issues with are: ebay (creating/editing listings), LinkedIn (have to refresh the homepage multiple times before all of the components appear and are usable), GitHub (WYSIWYG).

I've just assumed these issue are caused by add-ons behaving badly, but I haven't bothered to get scientific about it yet.

[dblohm7]

Report your broken websites to webcompat.com

[chrismorgan]

Nightly has been my daily driver for years, with a couple of brief interludes. There’s the very occasional possibly serious breakage, but I haven’t noticed any compatibility troubles for a long time. (But I don’t use Facebook, and of Google I only ever use Maps.)

Actually, I suppose there are a couple of sites which Tracking Protection completely broke, but that’s not Nightly-specific.