Can't assign Media Texture assets to the Brush->Image property in Images on Widget Blueprints. This workflow is explicitly mentioned as a step in these docs, so if this is no longer the correct method and/or a step is missing, those docs should be updated as well.
Expected Result:
Actual Result:
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-186819 in the post.