Actually after reading all the comments, there are surprisingly few specific problems (I was hoping for a good example but was disappointed). The way I interpr

Actually after reading all the comments, there are surprisingly few specific problems (I was hoping for a good example but was disappointed). The way I interpret this, the original description mentioned "you can't display your ads, overlays or anything else and thus it breaks player implementations of content providers" - and I am pretty sure Firefox's decision for PIP feature was _specifically_ to allow one to watch picture without ads or (often terrible) players by content providers. Now, the commenters understood that, and rightfully assumed that asking "hey FF, you made a system to block ads.. can you add an attribute to disable that?" would get their request denied, again. So they all say words like "enterprise system" to explain why they cannot give an example. Note that any time there is a problem with specific website URL (like mirroring in comment 23, or video controls in comment 34 and 36) get assigned separate bugs and fixed. It's only vague "enterprise system" use cases which get rejected. (Well, that and spanish learning system in comment 29, which needs to be able to track how of the video was watched. I am split about this - from one side I see the usefullness of knowing that sometimes, from other side this is exactly a kind of creepy feature that firefox is known to not implement)