The same happens, when the Omnibox Chip Bubble was visible before.

Attached a further screencast.

Deleted: Menu Bar doesn't disappear with Omnibox Chip Bubble.mov 1.9 MB

Menu Bar doesn't disappear with Omnibox Chip Bubble.mov 1.9 MB Download

Adding a blocker-label, since this is a regression.

Caused by: https://chromium-review.googlesource.com/641999

Friendly ping for an update on this issue marked as Beta Blocker.

I'm working on this now.

Great, thank you. If you have any further questions regarding the steps to reproduce this issue, please let me know. BTW: It would be great, if you could also have a look at  issue 762153  since both issues seem to be related. Thank you very much in advance.

sdy@,
Friendly ping to get an update on this issue as it is marked as beta blocker .

Thank you..!

 Issue 762153  has been merged into this issue.

CL is up: https://chromium-review.googlesource.com/c/chromium/src/+/688414

The NextAction date has arrived: 2017-09-28

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a3f912579a8d9352aac24d915d1407887b591c03

commit a3f912579a8d9352aac24d915d1407887b591c03
Author: Sidney San Martín <sdy@chromium.org>
Date: Thu Sep 28 21:42:48 2017

Fix toolbar and menu bar getting stuck open in fullscreen after certain actions.

- Move menu bar locking into ScopedMenuBarLock to get a stronger
  guarantee that the menu bar is left unlocked on exiting fullscreen.

- Use a different test for whether there should be a tracking area.

- Lock and unlock the menu bar from -[FullscreenToolbarMouseTracker
  mouseEntered:] and -mouseExited: directly. Also don't remove the
  tracking area in mouseExited:, this caused a case where the tracking
  area got removed while the menu bar was still visible.

- Remove a couple of unit tests which mostly repeated existing tests but
  also tested assumptions that are no longer valid. It might be good to
  add an interactive UI test in the future, or a unit test for
  FullscreenToolbarMouseTracker.

Background
----------

The menu bar and toolbar would get stuck if you enter fullscreen and
either:

1. Move the mouse to the top of the screen, then move it down over the
   toolbar, then back up to the top of the screen, then down to the
   middle of the screen. Cause: the tracking was incorrectly removed in
   mouseExited:.

2. Move the mouse to the top of the screen, then open a menu, move the
   mouse down to the middle of the screen, and click to close the menu.
   Cause: The menu bar overlaps the window when it drops down. Moving
   the mouse over the menu bar fired mouseExited:, but the old code used
   -mouseInsideTrackingArea, which still returned YES because the mouse
   was technically inside the tracking area even though mouseExited: had
   already fired and wouldn't fire again.

Bug:  762160 
Change-Id: Ia15228be8d62e16a66a712f78bd1c8fe62dbef26
Reviewed-on: https://chromium-review.googlesource.com/688414
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Sarah Chan <spqchan@chromium.org>
Commit-Queue: Sidney San Martín <sdy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#505168}
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/BUILD.gn
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller.h
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller.mm
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller_unittest.mm
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_mouse_tracker.h
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_mouse_tracker.mm
[add] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/scoped_menu_bar_lock.h
[add] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/scoped_menu_bar_lock.mm
[add] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/browser/ui/cocoa/scoped_menu_bar_lock_unittest.mm
[modify] https://crrev.com/a3f912579a8d9352aac24d915d1407887b591c03/chrome/test/BUILD.gn

Perfectly fixed. Thank you very much.

Works as expected now in latest Chrome Canary 63.0.3227.0 on macOS 10.12.6.

Also the issue with the enabled Dark Menu/Dock setting is fixed (merged  issue 762153 ).

Thank you sdy@ :-)

 Issue 758349  has been merged into this issue.

Thanks for catching this, mehmet@! \o/

 Issue 768188  has been merged into this issue.