As shown below, I have a content browser open and I can’t move or close the window.
This is a one-time occurrence, here is the full window layout (I work on 3 screens):
@Wertandrew Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative
With what map code? This is a UI issue inside UEFN