UI is behaving strangely since 41.00 , creating solid canvas, before the acutal graphic

Summary

Since update 41.00 the ui process strangely,especialy of first encounter with the specific UI, creating white solid square before inserting the correct images of the UI. Subsequent encounter sometime load fine, code is from sample UI material block example

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

UI/Tools

Steps to Reproduce

Run the sample UI code from sample pack, example on material block. first run white square then correct graphic

Expected Result

No white square when canvas is created, should show the graphic texture

Observed Result

white square then graphic

Platform(s)

PC UEFN

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