UEFN interface stops working when resizing tabs too close together

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

UI/Tools

Summary

As shown in video, moving tabs close together will make the UEFN window move instead of their separator

Steps to Reproduce

In UEFN, move the separator of Details and Outliner to a point where the two tabs names almost overlap.
Release mouse
Grab the separator again

Expected Result

You can move the separator

Observed Result

UEFN window moves instead

Platform(s)

PC