I wonder how much maintenance and testing these things add. Sure it would be trivial to get it working now, but they must have to do so many checks to see its not breaking on other browsers and then that it doesn't cause issues in the future.
Haha, are you kidding me? Using firefox try cilcking pause button in bottom left on youtube, then hitting space to play it (event is handled twice, video will only play fraction of second). It's been like that for .. 5 years +? With google photos / gmail / hangouts it's like Google is trying to actively discourage you from using anything other than Chrome by giving you just enough bugs to make you really annoyed but avoid being labeled as completely broken.
They should have it all working flawlessly at their scale, given amount of data they can collect and amount of communication they are providing about the issues.
I'm stopping before going further because I don't want to do the standard google keyword present let's do some bitching, but I wish Google put could 1/5 of the effort they are putting into making their core infrastructure rock solid on user experience in their products. Despite providing ff as an example it's not like having no issues when you run everything Google.
> They should have it all working flawlessly at their scale
Insufficient economic incentives.
Firefox is ~4% of the installed base for web browsers (as per externally-visible metrics). The priority for bug fixing is going to look something like Chrome -> Chrome (mobile devices) -> Safari -> Safari (mobile devices) -> Edge -> Firefox.
... additionally, if the same behavior works correctly in Chrome, Safari, and Edge, it unfortunately indicates it's more likely to be a standards-noncompliance bug on Mozilla's side than an error in the YouTube implementation.
