[adra]

I've used Firefox and Mozilla for what, 20 years? And I've never bumped into a situation like this. Some very clearly shit internal IT systems had pathetic IE requirements, but never one that said sorry go get chrome

[SoftTalker]

They don't always say "go get chrome" but one example that still happens to me is logging in to Outlook email at work, if I use Firefox I get a hobbled "basic HTML" interface, if I masquerade as Chrome on Windows I get the full UI and it all works perfectly.

Google drive is another one, where some things stop working depending on the user agent I'm presenting.

[EdwardDiego]

My health insurer won't let me login using Opera, a Chromium based browser, and suggests I install Firefox or... Chrome.

UA sniffing is soooo 2008.

[ben-schaaf]

Microsoft Teams also does this. Google meet used to do it too.

[kevin_thibedeau]

I have a randomized user agent and I occasionally see sites refuse to deliver a page because they think a particular browser won't work.