Mediakeys only work once

Hello

Since the last update (6th of October) my media keys only work once (let’s say for one “pause”) and won’t work afterwards. Tested it on both OpenSuse (with Firefox 49) and Gentoo (with Firefox 45.4). The web-console just drops a Empty string passed to getElementById(). once I invoke the first “pause”, but I don’t know if that is connected to the extension itself. When I open Firefox in a terminal I get the following output once I pause the playback: console.error: browsermediakeys: in mainthread EmitEventToActivePageWorker, aKeyName: MediaPlayPause

And this once I stop Firefox: console.error: browsermediakeys: called and did destroy

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[X-Ryl669]

In order to track down this bug, I’ve experienced this, can you confirm you’ve the same issue:

1. Load a (fresh) Firefox with the extension installed and with some session restoring a tab with music/video you want it to work with.
2. Go to the tab you’ve selected for the extension
3. Press a media key (it works once, not twice) / Or, alternatively, reload the tab, then it does not work, not even once
4. Unpin the tab (right-click the tab, select “Unpin Media Keys”)
5. Pin the tab again (right-click the tab, select “Pin Media Keys”)
6. Now, it works well (as many times as you want)

If it’s the case, @carlin-q-scott or @Noitidart, can you confirm you actually “repin” when the given tab reloads ?

[cybercorey]

Getting the same issue Firefox 52 on fedora 25 w/gnome