This is based off some testing for bug 1275937 using the add-on located at https://addons.mozilla.org/en-US/firefox/addon/browser-calories/. The popup opens quickly but goes through stages of flickering: https://www.dropbox.com/s/8tfrqoswrug6ghx/flickering-popup.mov?dl=0 This was tested on 52.0a1 (2016-10-14) (64-bit) on OS X 10.10.5
Status: NEW → RESOLVED
Last Resolved: 10 months ago
Resolution: --- → WORKSFORME
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