I’ve tried to play around with the Draw Size values to see if that would be the problem but nothing continues to appear. I’ve also changed from that widget to the other one and it appears.
Does it render in game but not in the viewport? If yes, this may fall under a known issue! 3D Widgets aren’t quite out of experimental yet. If this matches your case, I can look about for workarounds
When you remove all the other widgets, and make that the only widget in the blueprint does it render? if so then it would seem you can only have one 3D umg widget on a blueprint at a time would be my presumption, if not then your anchors are probably incorrect, if the anchors aren’t put in the right location, then elements become invisible, or more precisely what is being viewed is not the quadrant that the anchor is focusing on and hence is not in view.