Icon autocomplete does not work on Claro

Cannot reproduce on a fresh install 10.3.5/11.0.4.

I don't see anything in the logs, is it an existing field from alpha version? There is no update path from alpha to beta other than a flush caches and re-install is using an example module.

I still got the problem after a fresh Drupal install, last dev version of ui_icons and on the menu link form.

Conflict with patch from #2118743-253: Twig debug output does not display all suggestions when an array of theme hooks is passed to #theme →