Editing UI White Screen

Has anyone else tried to edit the UI or Entity Regestry to get a white screen show up and the URL changes to https://X.X.X.X:8123/covrig/homeassistant-hline/find/master ? Never seen this before today. If you start typing out words it will jump to this URL each time preventing you from editing anything. I did not see if anyone else has seen this issue with the update to 0.91 yet.