Rated 5 out of 5 stars

This is confirmed working in the latest version (56.2.1 as of this post) of Waterfox! Thank you for resurrecting this! Waterfox plans on keeping XPCOM/XUL classic add-on support, so please keep up the good work! There is still an audience for these legacy add-ons! :)

This review is for a previous version of the add-on (64.3).