Large number of widgets freezes the browser and makes widget admin unusable

[programmin]

Having a large number of widgets can freeze the browser for minutes while loading, and crashes Firefox when viewing source. On a site with a little more than 500 widgets (mostly text widgets!) it can be completely unresponsive for some time loading wp-admin/widgets.php

Tested in Firefox and Chrome beta.

[afercia]

Removing the accessibility focus as it's more related to performance than universal access and WCAG.

[audrasjb]

Hello,

If you have 500+ Text Widgets –which is huge!– I'd say your best bet is to handle that with a custom post type and to add them dynamically to your Widget areas. I'm closing the ticket as wontfix for now but feel free to reopen it if needed. I believe that the issue does not depends on WordPress Core but mostly on your website architecture.