It tries to use as little non-standard namespaces as possible, e.g. check [2] for a comparison of the markup you get after creating a new file and drawing a single rectangle.
The app uses Chromium rendering engine under the hood, so most files should render the same way as when opened with Chrome.
[2] https://gist.github.com/jarek-foksa/8f5bdef732827bc2a3bf49e3...
Does even Microsoft make any meaningful contribution to Chromium?
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"This site best viewed in Internet Explorer" is dead, long live "This site only works on the Blink engine".Well, ghee, thanks, but I'll just go somewhere else then shall I? While I do have Vivaldi and Chromium installed I only use these to test sites, not for general-purpose browsing. Here's to hoping Mozilla either gets inspired and kicks out 75% of its administrative staff to concentrate on their actual mission or some of those developers decide to be inspired by their forefathers who started the Phoenix->Firebird->Firefox project to get rid of all that legacy cruft. Make Mozilla Great Again!