Affected versions

• Latest Nighty 89.0a1
• Firefox 88.0b7
• Firefox 87.0

Affected platforms

• Windows 10 64bit
• MacOS 11.3
• Ubuntu 18.04

Steps to reproduce

1. Start Firefox
2. Login to a Firefox Account that has 2 or more devices connected
3. Right click on a tab
4. Select Send Tab to Device -> Manage Devices

Expected result

• The correct webpage to manage devices is opened.

Actual result

• Firefox Accounts page is opened but it has no content in it.

Regression range

• Not a regression since this reproduces since Manage Devices was implemented in bug 1661475.

Additional notes

• This also reproduces with Manage Devices from Send Page to Device and Send Link to Device.
• Not sure that this is a bug in Firefox, it might be a bug related to Firefox accounts server.

Suggested severity

• I would mark it as an S3 severity. Not sure how used this option is though, if it is something that people use a bunch it could be of a higher severity.

I can repro this - it opens https://accounts.firefox.com/settings/clients?context=fx_desktop_v3&entrypoint=sendtab&uid=<snip>&email=<snip> but is is blank.

I confirmed this bug as well - if you visit https://accounts.firefox.com/settings/clients or change clients to anything else (say https://accounts.firefox.com/settings/foo ) then the page loads a blank screen. The settings page should handle this URL correctly

Thanks, I filed this as https://jira.mozilla.com/browse/FXA-3348 and will track the work there. This is due to our settings redesign.