Right now, when you add a new widget plugin in admin/config/content/entity_browser/.../widgets, the default label is the machine ID of the plugin. Not only is this not intended to be seen by end users, it's also not translatable into other languages. For instance, adding an Entity Form plugin results a default label of entity_form.
Instead, this patch makes the label default to the label field, as set in the plugin's annotation.
Needs work
2.0
Widget selector plugins
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It's likely this issue predates Contrib.social: some issue and comment data are missing.