UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36

Steps to reproduce the problem:
1. Bookmarks menu
2. folder menu
3. [subfolder menu]

What is the expected behavior?
The initial menu item (or final menu item)  allows the user to navigate to all bookmarks simultaneously with a single action.

What went wrong?
This item should be prepended to any submenu containing more than one bookmark.  It is likely that this mechanism no longer recognizes said folder is actually a special bookmarks folder -or- the item count gets misreported, returning 0 or 1.

Did this work before? Yes SORRY!  I cannot say for certain.  My guess is circa 58.0.3029.

Chrome version: 61.0.3163.100  Channel: n/a
OS Version: OS X 10.12.6
Flash Version: 

Wavering only occasionally, Chrome steadily improves, making my life less frustrating with every passing year.  Keep it up.