I learned about the Windows/Developer/Widget Reflector today and set it to 0.8. While the engine scales correctly at first glance, once you open up any menu in the editor they flicker between the scaled and the original look
I was able to reproduce this issue on our end. I have written up a report and I have submitted it to the developers for further consideration. I have also provided a link to the public tracker. Please feel free to use the link provided for future updates. Thank you for your time and information.
Make it a great day