Updating mozilla firefox
If you maintain an extension that uses native components that rely on s and instead use Web features or XUL to implement your extension.
This article will help guide you as you update your add-on.
In addition, the back-end of the Add-on Manager was redesigned.
The interface is gone, as is the old RDF-based storage it used.
You can use that flag to ensure that an add-on that is likely to break will not try to run in updated copies of Firefox.
It's worth noting that add-ons that have binary components will always be strictly checked for compatibility, since binary components always need to be recompiled for each major Firefox release.
This happens when your element instead of a direct child of the overlay element.