Re-enable PointerEvents in Firefox once they fix their implementation

[mramato]

In #6999 we disabled PointerEvents in Firefox completely because their implementation seems broken. There is some discussion of this in #6372 (along with reproducible bugs)

Once Firefox improves their implementation, we should re-enable it (and confirm none of the bugs in the linked issue still exists)

[thw0rted]

You might want to follow https://bugzilla.mozilla.org/show_bug.cgi?id=1463354 which I filed, oh wow, half a year ago 😞 , with no updates for 2 months now 😭

[mramato]

Thanks for adding the link @thw0rted. That's definitely the issue I keep track of. Glad to see it looks like there's been some progress at least.

[bkuster]

Hi there! I just stumbled across this, since our application was misbehaving in FF. In short: the ScreenSpaceEventHandler was firing events for a hidden canvas (using stylde.display = 'none'). Something it did not do in any other browser. With some digging I came on to this:

cesium/Source/Core/FeatureDetection.js

Lines 176 to 177 in c5abf0d

	hasPointerEvents =
	!isFirefox() &&

Deleting line 177 has solved the problem for me. Is there any reason to keep FF out of the pointer event API anymore? Following @thw0rted s issue with the FF team, the pointer events should be working again as of FF 67?