Landscape flatten target value and terrace interval's sliders don't take the landscape scale into account

UE - Graphics Tools - Terrain - Landscape - Mar 13, 2024

This problem was originally reported in this UDN : https://udn.unrealengine.com/s/question/0D5QP000007yVue0AE/flatten-brush-limit-with-landscape-scale-z?fromCase=1 ...

Nanite mesh shadows not updating when CSMCaching enabled

UE - Platform - Mobile - May 25, 2024

A Nanite primitive casting a CSM shadow on another Nanite primitive with "Cast Shadows" disabled, will have it's shadow disappear completely when r.Shadow.CSMCaching = 1. ...

Jitter on anim sequences compressed with ACL containing large scale on root

UE - Anim - Runtime - Jul 18, 2024

The ACL codecs are generating jitter in the animations on the linked UDN.  This may be related to the large scale that's being applied to the root bone in the skeleton.  This appears to be a regress ...

[Interchange][FBX] Import model with custom collision prevents socket to be imported

UE - Editor - Content Pipeline - Import and Export - Feb 5, 2025

I would like parity with legacy: 1) only one material 2) socket to be imported Box_Socket file imports same in legacy and interchange: it is just box and socket without collision. ...

UDN Bug: ASTC compression becomes greyscale

UE - Anim - Mutable - Feb 13, 2025

Bug reported at https://udn.unrealengine.com/s/question/0D5QP00000tOpXN0A0/using-mutable-plugin-results-in-greyscale-textures-on-android-xr?fromCase=1 ...

Changing Preview Rendering Level hides transform widget

UE - Platform - Mobile - Aug 5, 2016

When you change the Preview Rendering Level to Android Preview and then close the project, reopen, and do this again it hides the transform widget. ...

GlobalShaderCache file is missing when Direct X 11 SM5 is disabled for packaging

UE - Graphics Features - Nov 16, 2016

When trying to launch a .exe after disabling SM5 in the project settings, an error will appear. The global shader cache file ../../../../Engine/GlobalShaderCache-PCD3D_SM5.bin is missing. ...

Adding a Structure BP parameter with a Enum BP as a member to a Niagara Module Script crashes the engine

UE - Niagara - Apr 6, 2022

Adding a parameter of type structure bp which references an enum as a value to a module script crashes the engine. This issue is also occurring in 4.27. ...

Crash when removing Blueprint function

UE - Gameplay - Blueprint Compiler - Apr 23, 2018

The Editor crashes whenever the reference to the "DeleteThisFunction" function is deleted. ...