Firefox has updated to 56 and its broken

Brian's Mail list account <bglists@...>

It just did this and now it opens in some kind of bookmark panel.
One has to tab to find the actual displayed page. I am thinking this is a Firefox bug. Toolbar for bookmarks is definitely off.

Anyone else noticed this?
Sent via blueyonder.
Please address personal email to:-, putting 'Brian Gaff'
in the display name field.

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