Just to update,Still able to reproduce the issue on Mac 10.12.2 using latest chrome version 57.0.2984.0.

spqchan@ Could you please look into this issue.

Thanks!

Just to update, still able to reproduce the issue on Mac 10.12.2 using latest chrome version #58.0.2990.0.

spqchan@ - Gentle Ping...!!

Could you please have a look into this issue.

Thanks...!!

 Issue 637392  has been merged into this issue.

The CL has landed: https://chromium.googlesource.com/chromium/src/+/a7140be113cefff6413d285e9bce20b513f52686

commit	a7140be113cefff6413d285e9bce20b513f52686	[log] [tgz]
author	spqchan <spqchan@chromium.org>	Thu Feb 02 18:39:19 2017
committer	Commit bot <commit-bot@chromium.org>	Thu Feb 02 18:39:19 2017
tree	9ac0dc28817cf1ef6f5f148aba712dbabbcbefde
parent	5e86b62256b5d7cdc7a10f57c06a1b040e2bbede [diff]
[Mac] Fullscreen layout issues

- Fixed the incorrect y offset for tab detached windows in fullscreen
- Fixed the layout issue with the infobar in fullscreen

BUG= 670445 , 678204 

Review-Url: https://codereview.chromium.org/2666213003
Cr-Commit-Position: refs/heads/master@{#447804}

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a7140be113cefff6413d285e9bce20b513f52686

commit a7140be113cefff6413d285e9bce20b513f52686
Author: spqchan <spqchan@chromium.org>
Date: Thu Feb 02 18:39:19 2017

[Mac] Fullscreen layout issues

- Fixed the incorrect y offset for tab detached windows in fullscreen
- Fixed the layout issue with the infobar in fullscreen

BUG= 670445 , 678204 

Review-Url: https://codereview.chromium.org/2666213003
Cr-Commit-Position: refs/heads/master@{#447804}

[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/browser_window_controller.mm
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/browser_window_controller_private.mm
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller.h
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller.mm
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller_unittest.mm
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/tabs/tab_window_controller.h
[modify] https://crrev.com/a7140be113cefff6413d285e9bce20b513f52686/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm

Your change meets the bar and is auto-approved for M57. Please go ahead and merge the CL to branch 2987 manually. Please contact milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9045f614d43726ac315078312899f4973db5be64

commit 9045f614d43726ac315078312899f4973db5be64
Author: spqchan <spqchan@chromium.org>
Date: Fri Feb 03 21:32:39 2017

[Mac] Fullscreen layout issues

- Fixed the incorrect y offset for tab detached windows in fullscreen
- Fixed the layout issue with the infobar in fullscreen

BUG= 670445 , 678204 

Review-Url: https://codereview.chromium.org/2666213003
Cr-Commit-Position: refs/heads/master@{#447804}
(cherry picked from commit a7140be113cefff6413d285e9bce20b513f52686)

Review-Url: https://codereview.chromium.org/2671073002 .
Cr-Commit-Position: refs/branch-heads/2987@{#300}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/browser_window_controller.mm
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/browser_window_controller_private.mm
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller.h
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller.mm
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/fullscreen/fullscreen_toolbar_controller_unittest.mm
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/tabs/tab_strip_drag_controller.mm
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/tabs/tab_window_controller.h
[modify] https://crrev.com/9045f614d43726ac315078312899f4973db5be64/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm

Tested this issue on Mac OS 10.12 using chrome latest M57-57.0.2987.37 by following steps mentioned in the original comment. Observed still black screen is seen while detaching the tab in full screen.

spqchan@ Attaching the screen-cast of the behavior, could you please let us know what's the expected behavior of this issue to verify it from chrome-TE end.

Thanks!

Deleted: TEST.mp4 1.8 MB

	TEST.mp4 1.8 MB View Download

Based on comment#9 comparison with bug report part of the bug looks to be fixed i.e., when we drag a tab out from the browser we still have the "New Tab", Where in the later part still was the same once the tab is completely dragged to the bottom of the page.

I can't reproduce any of the issues on the screencast at #9

The problem in c#9 (steps to reproduce in the original bug report) still exists. This is in 58.0.3006.0 Canary. Here are steps:

1. Create a new window with two tabs (call them, ordered left to right, A and B)
2. Place the window in fullscreen mode
3. Drag tab B down to the lower-right corner of the screen (your mouse should be placed as far down and to the right as possible)
4. Release the mouse - tab B now snaps to its own space
5. Drag tab B out of its window - I'm not sure you should be able to do this because it's the only tab in the window. When you do this, tab B exits its dedicated space and you see tab A again.
6. Release tab B in the middle of the screen.
7. Start dragging tab B again

At this point Chrome window dragging gets really confused.

Sorry, should've mentioned more in #11. I can't drag tab B out of its own window.

See Issue 690257 for a screengrab movie of Tab B dragging out of a fullscreen window in the latest canary.

Update:

***Mass UI Triage***

We were unable to reproduce this bug on latest Canary version #72.0.3611.0. If this bug still reproduces for you, please reopen or file a new issue.

Thanks!