454772 - "load" event isn't sent if multiple dialogs are opened with "centerscreen" flag

Status: RESOLVED DUPLICATE of bug 321099

(Core :: XUL, defect)

Description

[Wladimir Palant]

Attachment: Testcase

Apparently, dialogs sometimes won't get a "load" event. The conditions are:

1. XUL cache is enabled (nglayout.debug.disable_xul_cache is false or doesn't exist)
2. Multiple dialogs with the same URL are opened simultaneously
3. This URL hasn't been opened before
4. Dialogs are opened with a "centerscreen" flag

In this scenario only the first dialog will get a "load" event. This is similar to 420815, yet the scenario is somewhat different.

To reproduce:

1. Download the testcase to your disk somewhere where it accessible via chrome://
2. Open Error Console and enter following command:

for (var i = 0; i < 3; i++) {openDialog("chrome://test/content/dialog_load_test.xul", "_blank", "centerscreen")}

(change the URL as required)

Note how the first time you do it only one dialog says "Loaded" while the others say "Not loaded". I could reproduce it in Firefox 3.0.1 and in a Firefox 3.1 nightly (20080909032504) - both on Windows though according to the bug report I was investigating the same happens on OS X as well.

Comment 1

[Wladimir Palant]

We identified another bug report in our bug database as a duplicate of this one - almost identical but applies to pages loaded into <xul:iframe>. So this isn't limited to dialogs.

Comment 2

[Wladimir Palant]

Works for me in current trunk and 1.9.1 nightlies - apparently fixed in bug 206691. Also, this seems to be a duplicate of bug 321099.