Something changed recently (in the last two months or so) and the pending-state animation has disappeared for a tagMultiselectWidget widget I've made.
I'm loading OOUI in a (non-MediaWiki) tool, and everything's working fine, but the striped scrolly thing doesn't appear while the widget's menu is loading.
It looks like there's an ordering problem in oojs-ui/dist/oojs-ui-wikimediaui.css:
- .oo-ui-pendingElement-pending appears on line 464, but
- .oo-ui-tagMultiselectWidget.oo-ui-widget-enabled .oo-ui-tagMultiselectWidget-handle on line 3081 overrides the background-color property, clobbering the pendingElement's background-image.