Hey this is broken for me too but I found a workaround through @Dudiing . Select the widget you want to use in your Content Browser, then in your HUD Messenger’s Details Panel click the arrow in a circle icon to the right of the HUD Widget input window in order to “Use Selected Asset from Content Browser.” It works for me!
Thanks so much Dudiing!
@Mist_JawaYT also reported this, so I’m upvoting all of these posts in the hopes it gets more attention.