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Due to the limited/non-public audience of this add-on, we recommend switching it to 'unlisted' [Add-on Support] (1)
Can't install extension on Mozilla Firefox Linux 49.01 OpenSuse Tumbleweed, Promise Error [Add-on Support] (2)
Addon popup behavior inconsistentcy in firefox 49.0.1 released version and nightly builds [Add-ons] (3)