In Chrome I am running ABP, which can't be very uncommon, Evernote web clipper, rest console, xpath helper, and a bunch of Google's own shims. I will file a bug later today if I can repro the results.
Same here. Most sites are those that I visited shortly a long time ago.
Same here. The only addon I use is uBlock origin. I also had to activate javascript on the page which I normally don't.