Why the entitled tone demanding "to clarify which exactly key features"?
It is the right of developers to say "I don't want to support your browser" and you should respect that decision even if you disagree with it.
As a reality check, see this ticket:
https://bugzilla.mozilla.org/show_bug.cgi?id=390936
It took Firefox 17 years of back and forth with developers to add parity with an Internet Explorer feature that Chrome supported since version 1. This late in the game IE is already dead for good.
Not everybody has infinite time or infinite money to support Firefox, as an aside, you knew what you signed up for when you made Firefox your main browser.
So please, change the "clarify why you don't support Firefox" tone with "I want to make the site work with Firefox, how can I help you?". And good luck making the Firefox team change their mind when they decide not to support X feature, because it is also their right to do not implement the whole spectrum of features that Chrome supports.
It is the right of developers to say "I don't want to support your browser" and you should respect that decision even if you disagree with it.
As a reality check, see this ticket: https://bugzilla.mozilla.org/show_bug.cgi?id=390936
It took Firefox 17 years of back and forth with developers to add parity with an Internet Explorer feature that Chrome supported since version 1. This late in the game IE is already dead for good.
Not everybody has infinite time or infinite money to support Firefox, as an aside, you knew what you signed up for when you made Firefox your main browser.
So please, change the "clarify why you don't support Firefox" tone with "I want to make the site work with Firefox, how can I help you?". And good luck making the Firefox team change their mind when they decide not to support X feature, because it is also their right to do not implement the whole spectrum of features that Chrome supports.