Lag when closing multiple tabs on new window (lag is longer the more windows opened)

Summary

Lag when closing multiple tabs on new window (lag is longer the more windows opened)

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

UI/Tools

Steps to Reproduce

Import 30 textures into a project
Open them all, one by one, so they open in a separate window and you have 30 tabs in it.
Close the window, closing all 30 tabs

Expected Result

UEFN is not frozen

Observed Result

UEFN is frozen for a while. Increasing the number of closed tabs also increases the freeze time.

Platform(s)

pc

FORT-965565 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.