Chrome Version: Canary 62.0.3192.0
OS: macOS 10.12.6

What steps will reproduce the problem?
(1) Save five bookmarks into a folder
(2) Do a right-click on that folder
(3) You will notice that the counter shows (5) items
(4) Now delete one of the bookmarks in that folder
(5) Again do a right-click on that folder

What is the expected result?
The counter should update and should shows (4) items now.

What happens instead?
The counter still shows (5) items.

It only updates the counter in a new opened window.

If you need more information or a screencast, please let me know.

Thanks.
Mehmet