[Bug 1587107] [NEW] After removing folders from bookmark menu, unnecessary separators remain

[Nikita Yerenkov-Scott]

Public bug reported:

I have recently found that in the latest version of Firefox (Firefox
46.0.1) on Ubuntu GNOME 16.04 with GNOME 3.20 that if I remove the pre-
added (they were there by default) bookmark folders from the bookmark
menu by right-clicking on them and choosing the remove option, that
unnecessary separators remain even though they should be automatically
removed and there seems no way from this menu to remove them. Here is an
example:

    Bookmark_Menu_Firefox.png

** Affects: firefox
     Importance: Unknown
         Status: Unknown

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: xenial

** Attachment added: "Bookmark_Menu_Firefox.png"
   https://bugs.launchpad.net/bugs/1587107/+attachment/4673037/+files/Bookmark_Menu_Firefox.png

** Description changed:

- I have recently found that in the latest version of Firefox (Firefox 46)
- on Ubuntu GNOME 16.04 with GNOME 3.20 that if I remove the pre-added
- (they were there by default) bookmark folders from the bookmark menu by
- right-clicking on them and choosing the remove option, that unnecessary
- separators remain even though they should be automatically removed and
- there seems no way from this menu to remove them. Here is an example:
+ I have recently found that in the latest version of Firefox (Firefox
+ 46.0.1) on Ubuntu GNOME 16.04 with GNOME 3.20 that if I remove the pre-
+ added (they were there by default) bookmark folders from the bookmark
+ menu by right-clicking on them and choosing the remove option, that
+ unnecessary separators remain even though they should be automatically
+ removed and there seems no way from this menu to remove them. Here is an
+ example:
  
-     Bookmark_Menu_Firefox.png
+     Bookmark_Menu_Firefox.png

** Bug watch added: Mozilla Bugzilla #1276692
   https://bugzilla.mozilla.org/show_bug.cgi?id=1276692

** Also affects: firefox via
   https://bugzilla.mozilla.org/show_bug.cgi?id=1276692
   Importance: Unknown
       Status: Unknown

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Title:
  After removing folders from bookmark menu, unnecessary separators
  remain

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