1126834 - Displaying an alert from an async XMLHttpRequest causes existing alert to become modeless

Status: RESOLVED WONTFIX

(Toolkit Graveyard :: Notifications and Alerts, defect)

Description

[Mike Kaply [:mkaply]]

Attachment: Extension that shows the problem

I'm demoing this using alerts, but it's happening for us with login dialogs, so it's a real world issue.

If you display an alert and then subsequently display a separate alert in response to an async XMLHttpRequest, after dismissing the second alert, the first alert becomes modeless, allowing full access to the browser window behind it.

It should stay modal.

The attached extension displays the problem immediately upon installation. You'll want to uninstall after testing, otherwise it will show the alerts at startup.

Comment 1

[BMO Automation]

Per policy at https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Inactive_Bugs. If this bug is not an enhancement request or a bug not present in a supported release of Firefox, then it may be reopened.

Comment 2

[Mike Kaply [:mkaply]]

Extension related.