1514601 - Selecting all tabs and then closing them while browser.tabs.closeWindowWithLastTab is false can "break" that window

Status: NEW

(Firefox :: Tabbed Browser, defect, P3)

Description

[Flávio Monteiro]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0

Steps to reproduce:

1. Start browser
2. Have browser.tabs.insertAfterCurrent set as true in about:config
3. Have browser.tabs.closeWindowWithLastTab as false in about:config
2. Open a second tab
3. Right click on any of the tabs and click on "Select all"
4. Hit Ctrl + W



Actual results:

All tabs are closed succesfully, but a new zombie one appears. This tab can't load any websites. Also, Firefox gets "locked" from opening new tabs in that window, clicking on the new tab button or doing Ctrl + T has no result whatsoever.

Opening a new window and closing the current one is a possible workaround.


Expected results:

All old tabs are closed successfully and a new one spawns on that window, from which I can actually enter websites. Also, creation of new tabs doesn't get broken.

Comment 1

[Alice0775 White]

I can reproduce the issue on Nightly83.0a1 Windows10.
The zombie tab will hang up.

Regression window:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=7e9cac76980a2a4a10898c721c4a054db831ab4a&tochange=88ba9f723934257d34fde00d87b5ed4f54e258ca