UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36

Steps to reproduce the problem:
1. Open a new Chrome instance;
2. Open a new tab (Cmd-T);
3. Drag the new tab and detach it into its own window;
3a. Optionally create new tabs in this new window (Cmd-T);
4. Click the green button in the title bar to make this new window fullscreen;
5. Move your mouse to the top of the screen until the macOS menu and the window title bar appears;
6. Verify that the window's title bar is just a gray area with the red/yellow/green buttons and the window tab(s) missing.

What is the expected behavior?
The fullscreen window created in step 4. should have window buttons and tabs.

What went wrong?
The window buttons and tabs are missing, making it impossible to exit fullscreen or switch tabs (without knowing the proper keyboard shortcuts, that is).

Did this work before? Yes 61.0.3163.100

Chrome version: 62.0.3202.62  Channel: stable
OS Version: OS X 10.12.6
Flash Version: 

If a new window is created (Cmd-N) and then made fullscreen, the problem does not happen. It only happens with new windows created by detaching a tab from an existing window.

I'm able to reproduce this problem in multiple machines, both with the primary screen and external monitors.

It used to work in Chrome 61 on the same machines with no other changes whatsoever.
 

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