1204782 - unload event is not bubbles up to XUL

Status: UNCONFIRMED

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Sergey Rashitov]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.124 YaBrowser/15.7.2357.2877 Safari/537.36

Steps to reproduce:

1. Open a tab with any website (example.com)

2. In JS console do:
gBrowser.addEventListener('unload', console.log.bind(console, "UNLOAD 1"), true);
// var xulBrowser = gBrowser.browsers[1];
xulBrowser.addEventListener('unload', console.log.bind(console, "UNLOAD 2"), true);

3. Change url in the address bar of the tab to another website (example.org)

4. Check JS console

5. In tab console do
window.addEventListener('unload', console.log.bind(console, "UNLOAD 3"), false);

6. Change url in the address bar of the tab to another website (example.com)

7. Check JS console


Actual results:

On step 4 I see no messages.
On step 7 I see 3 messages (unload 1, unload 2, unload 3)


Expected results:

On step 4 I should see 2 messages (unload 1, unload 2).


Also, if on step 3 I do redirection via JS or just location.reload() or press F5 or press reload button near address bar, then on step 4 I see 2 messages (unload 1, unload 2)