What OS? KDE or Gnome? I can't replicate the issue in distro version of 92 nor Nightly. see screenshot

I can get something close with no page style. see screenshot Do you have the same issue in safe mode? Try downloading a separate copy of Firefox and run it from the folder(do not sign into you Firefox account) to see what happens.

https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

Thank you for sharing your add-ons list. Did you try making an exception with Disconnect?

More generally, eBay hosts many style sheets and script files on a companion domain (ebaystatic.com), with addresses similar to the following. I believe these are hosted on a geographically distributed network. If you try to load one of the files directly, do you get a wall of text (expected result) or an error page?

style sheet: https://ir.ebaystatic.com/rs/v/p54ecrphum1nlp0qdopn52nntyc.css?proc=DU:N

script: https://ir.ebaystatic.com/rs/c/inception-6NlhMWD3.js

thanks @jonzn4SUSE and @jscher2000

I logged on today and the problem has gone away. So in some sense, problem solved.

This is weird. But, perhaps it's something to do with ebay? To answer your questions: 1. xubuntu. And it doesn't quite look the same as the No Page Style option. 2. I had already thought about the ebaystatic links, and added that to ETP exceptions, but the other day that made no difference. That's a good point about Disconnect. But today it's all working, so presumably this isn't the problem.

Perplexed.