I tried to do what you commented but it didn’t work.
Video showing:
Was configuring “User Options - Game Rules”, when cleared the filter field by erasing what had typed. After that it disappeared.
I tried uninstalling fortnite and the editor but the problem persists. I even changed the partition, but it didn’t solve it.
I also deleted the Epic folders that are inside AppData in windows, but it didn’t solve it.
Is there any other place that stores software cache?