Got a report from a German user that Firefox 51 showed an undefined entity error message (and the browser was unusable). It's about > <description id="identity-popup-permission-reload-hint">&identity.permissionsReloadHint;</description> in browser.xul which got added in bug 1206229 for Firefox 51. Unfortunately, there are no information on which OS this was, it could have been on a Linux distro which uses language packs for Firefox and set the language pack from Firefox 50 to be compatible with Firefox 51.
I don't think there's enough information to do anything here, and it doesn't look like it's possible to get more information. :-(
10 months ago