1435580 - Closed window still present in macOS Mission Control's Application Windows

Status: RESOLVED INVALID

(Core :: Widget: Cocoa, defect, P3)

Description

[oneofthedamons]

Attachment: Screen Shot 2018-02-04 at 12.52.34 pm.PNG

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:59.0) Gecko/20100101 Firefox/59.0
Build ID: 20180201171410

Steps to reproduce:

Close a Firefox window then activate macOS Mission Control's "Application Windows" feature.


Actual results:

The closed Firefox window is still shown in the Application Windows, albeit just a black screen. Eventually the black screen disappears, but the window title is still present [see screengrab].


Expected results:

The closed window should not be shown at all in Mission Control.

Comment 1

[oneofthedamons]

Attachment: Black window as described above (top-right)

Comment 2

[Stephen A Pohl [:spohl] (OOO until 3/25)]

I'm unable to reproduce this. Does this still reproduce after a system restart? Could you run mozregression[1] to see if this is a regression? If you have never run mozregression before, simply run these three commands in a Terminal window:

sudo easy_install pip
sudo pip2 install -U mozregression
mozregression

A number of Firefox versions will open in succession to narrow down when this started occurring. Simply type "good" or "bad" in Terminal based on whether or not a build reproduces the bug.

[1] https://mozilla.github.io/mozregression/

Comment 3

[oneofthedamons]

I've now replicated this bug in Mail.app so clearly the issue lies with the OS and not Firefox. My apologies for wasting your time.