Hi match,
Are you still seeing this issue? Have you updated to the newest version of the editor? We are at 4.7.5 now.
If you update and you are still seeing this issue, here is one thing to try. There may be old data that has not gotten properly deleted at some point, and here is what to delete to try and fix that. In the Engine folder, delete the DDC (Derived Data Cache). In your project, delete the Intermediate, the Saved, and the Binary folders.
Thanks!