Hello steveray,

'Must admit that I've never seen that box before ....

I did some searching - to no avail; then took a look at your system details, which show quite a few extensions.

I checked about seven of them, to see if I could find a clue there - also to no avail.

At this point I would suggest to try Firefox in Safe Mode :

If Firefox is not running : Hold down the Shift key when starting Firefox.

If Firefox is running : 3-bar menu => ' ? ' (at the bottom of the dropdown) => 'Restart with Add-ons disabled'. Then OK the restart. A small dialog should appear. Click 'Start in Safe Mode' ( not 'Refresh' !)

See : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Should that mystery box not appear in Safe Mode, then you'd have to re-enable every extension one-by-one to find the culprit .....

Do you get a tooltip if you hover this box or can you click or right-click ?

If you can right-click then try to open the Inspector to see what comes up.

• https://developer.mozilla.org/en-US/Tools/Page_Inspector/How_to/Examine_and_edit_HTML

thanks for the tip. From there I figured out it was an extension

steveray100 said

thanks for the tip. From there I figured out it was an extension

Just curious (as I tried seven of your extensions) : which extension was it  ?

Safe Mode didn't point in that direction ?

it was the timed restart