pointerdown only fires once in Firefox v0.4.0

[ademup]

Problem: v 0.4.0 Firefox only fires "pointerdown" once, not allowing subsequent pointer downs.
v0.3.0 does not have the same problem.

Steps:

1. Went here: http://jsbin.com/bojumofowa/1/edit?html,css,js,output
2. Change to /pep/0.4.0/pep.js
3. Change event to on("pointerdown")
4. Click in canvas area, only one pixel shows. All subsequent clicks are ignored.

I'm using Firefox 42.0 on Ubuntu.

[bethge]

Does this jsbin look like the one you are describing: http://jsbin.com/muwovegowo/edit?html,css,js,output ?

I tried it in FF 37.0.2, FF 42.0 and FF 45.0a1f (Nightly) on OS X and repeated clicks do show up.

Is your experience the same with other browsers?

[tf]

@bethge your fiddle does not work for me on Firefox 38 under Ubuntu. If I change the script tag to 0.3.0 it works.

[bethge]

Indeed! I got my hands on an Ubuntu 14.04 LTS with FF 39 and the fiddle does not work with 0.4.0.

[ademup]

@bethge - that is correct. It also does not work on FF 41.0.2 on Ubuntu 15.04. If I change your jsbin to pep/0.3.0/ it works just fine in both 14.04 and 15.04. Both pep versions work in Chrome on both 15.04 and 14.04.

[bethge]

I believe no second pointerdown is triggered due to no pointerup being triggered from the first pointerdown, leaving the pointermap in disarray.

In FF on Ubuntu mouseup for a left-click has the properties buttons: 1 and button: 0, while most other browser have the properties buttons: 0 and button: 0. With PEP 0.4.0, the buttons property, if available, is used for pointerup checking: https://github.com/jquery/PEP/blob/master/src/mouse.js#L107 .

[scottgonzalez]

@mbrubeck Sounds like this might be a web compat issue. Are you aware of this behavior?

[mbrubeck]

I think this may be https://bugzilla.mozilla.org/show_bug.cgi?id=1223366

[scottgonzalez]

Indeed it is. I don't believe Sebastian's comment is correct. The spec says "During any mouse events, buttons must be used to indicate which combination of mouse buttons are currently being pressed, expressed as a bitmask." and the button is obviously not currently being pressed at the point that mouseup is fired.

[mbrubeck]

I submitted a patch for the Firefox bug. The bug fix should be included in Firefox 45, which will be released in March 2016. PR #243 looks like a good workaround until then.