Current Version plugins

Add-on Compatibility for Firefox 54

If you haven’t yet, please read our roadmap to Firefox 57.

Firefox 54 will be released on June 13th. Here’s the list of changes that went into this version that can affect add-on compatibility. There is more information available in Firefox 54 for Developers, so you should also give it a look.

General

  • Remove -moz-appearance. This doesn’t apply to CSS sheets loaded using a chrome:// URL, but it does affect inline CSS styles in XUL and JavaScript code.

XPCOM and Modules

WebExtensions

Let me know in the comments if there’s anything missing or incorrect on these lists. If your add-on breaks on Firefox 54, I’d like to know.

The automatic compatibility validation and upgrade for add-ons on AMO will happen in a few weeks, so keep an eye on your email if you have an add-on listed on our site with its compatibility set to Firefox 53.

The post Add-on Compatibility for Firefox 54 appeared first on Mozilla Add-ons Blog.


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