WebExtensions - browser action with popup not working

Add-ons Development
#1

CustomizableUI does not build the toolbar button, gives the message:
[CustomizableUI] Custom widget with id … does not return a valid node

Problem appears to be: ext-browserAction.js:143, undeclared reference XUL_NS

Tested in both Aurora and Nightly.

#2

Adding @billm.

#3

Show code please.
I used CUI.jsm recently and it worked out fine here:

#4

Just trying the example “beastify” from

Note it is missing the “applications” property in the manifest. Maybe I’m doing something wrong.

#5

No, you’re right. This is a known bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1199842

#6

Ahh thanks, I had searched Bugzilla for WebExtensions and came up with nothing.

#7

This should be fixed now.