Issue 626525  is now fixed, but it doesn't affect this bug. That means that the very bad case of closing your whole window when you're trying to close a tab doesn't happen; the tab just doesn't close using the Ctrl-W keyboard shortcut if you're in this state.

However, the *only* way to trigger this bug is by clicking on the permission bubble itself to bring the window with the bubble back in focus. Clicking anywhere else in the window is fine. Using Alt-~ to switch to the window is also fine, as is using Mission Control. In all of these cases, switching to the window and using Ctrl-W just closes the tab - it's not intercepted by the permission bubble. Also, Esc works to dismiss the permission bubble as well.

I talked this over with tapted and he agrees it's so obscure that it's not worth fixing right now. Possibly could be revisited in future.

This has been around forever - see e.g.  Issue 302117  . There's some diagnosis there - 

"""
there is some code in app_controller_mac.mm `fixCloseMenuItemKeyEquivalents` [1] which is called asynchronously, after a delay and triggered when window focus changes. Noticed it while fixing   Issue 262848   (in https://codereview.chromium.org/127343004/)

I suspect fixCloseMenuItemKeyEquivalents is the cause, but the fix for this isn't obvious 

[1] https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/app_controller_mac.mm&q=fixCloseMenuItemKeyEquivalents&sq=package:chromium&l=493
"""

I don't think it's anything special about bubbles, permissions, or MacViews.

uhh - the method is now called "adjustCloseWindowMenuItemKeyEquivalent"

https://cs.chromium.org/chromium/src/chrome/browser/app_controller_mac.mm?q=adjustCloseWindowMenuItemKeyEquivalent&sq=package:chromium&l=575

In the meantime, the situation has changed. Now there are two, slightly different, and disparate problems:

 1) As long as the bubble has focus (regardless of whether the parent Chrome window has an activated title bar or not), closing the window (Cmd + Shift + W) does not work, nor does picking this menu item from the File menu do anything.

 2) Closing the tab seems to always work, but in the edge case when the bubble has focus and the parent window is not activated, doesn't have an associated accelerator, because Cmd + W is mapped to "Close window", not "Close tab". But it does not do anything as per (1).

Trent, does either of those sound like an easy fix?

How do you get into state 2.?

For 1. I agree Cmd+Shift+w should close the browser window. For me it does seem to do this? (however you're right the menu item does not work - that's a bug).

I don't know what the fix is, or whether it will be easy, since I don't know what's causing the bug.