This is an overarching issue with the Rift at the moment - Slate and UMG had / has the same issue. I believe that Slate is working in 4.6.1, but I can’t verify it at the moment.
Epic are working on it, though 
This is an overarching issue with the Rift at the moment - Slate and UMG had / has the same issue. I believe that Slate is working in 4.6.1, but I can’t verify it at the moment.
Epic are working on it, though