Not only is it the default on Android, it is required by some apps, like gmail that all its links open in Chrome despite Firefox being default on my phone. It stinks of the monopolistic behavior MS was engaged in with IE back in the day.

If you go into Gmail's General Settings screen, you can uncheck "Open web links in Gmail". All the links I open in Gmail open directly in Firefox for me after doing that.

If I leave that box checked, it does use a web view that is "Powered by Firefox", but I always prefer to have it just open a new tab in my regular Firefox app.

Hey thanks, I presumed it was chrome because it ran differently compared to my normal FF install and had no plugins! Sorry for the newb moment!

Yeah, being able to run uBlock Origin is one of the main reasons I don't want apps opening links in anything but my main Firefox install.

Gmail link in Android open in a web view, but that view is powered by your chosen browser. If you tap on the menu icon on the top right, it says "Powered by Firefox" if Firefox is your default browser.

All my Gmail links open with a "Powered by Firefox" view on my Android phone. I need to click through a menu to transfer it to a tab in Firefox app proper, but it's Firefox straight from Gmail.