[Bug]Error when extruding Sheet

I tried to extrude a “Sheet” BSP along the Z axis using the Scale tool. The program froze for a few seconds before giving me this error report:

Ensure condition failed: false [File:D:\BuildFarm\buildmachine_++depot+UE4-Rocket+Beta4\Engine\Source\Runtime\Engine\Private\Polygon.cpp] [Line: 876]

Stack: Address = 0xdbaa93a6 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdb9b2022 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdb8d73f9 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xda132579 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd79e6068 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7aeda5a (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7aedde8 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7b04e1b (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7ae38a3 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7b150d5 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7ae020d (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7b107cb (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7a11b82 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd7d17549 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0x3f896093 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f88cb8c (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f88cbfa (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f89772b (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f8983c3 (filename not found) [in F:\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x7701652d (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x7724c541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x7724c541 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]

Hi Mads,

Thank you for your report. I have investigated this error on our internal build and can confirm that Sheet BSPs have been changed so they can no longer be extruded from. This feature update will be in a future build of Rocket. If there is anything else that is not behaving as expected, please let me know and I will be happy to further assist you.

Thank you,

Alexander