UE 4.17 drag and drop not working

Minimum Setup:

Result: Screen capture - 056eb5253b7da931c64ac8ae844e10f5 - Gyazo

Tested on 4.17.0 source, you guys sure you did not mess up somewhere? Can anybody try it with that minimalistic setup?

EDIT: see Comment Bellow 100% Reproducable, confirmed Bug