Unreal Engine Issues

Incorrect mesh offset behavior when playing a forward start after following "Adapting Lyra animation to your UE5 game"

See the answer in the UDN: [Link Removed] We may want to update the blog post with a suggested fix, or wait until the automatic root offset tech is production ready. ...

Variable can't be set by the Pick Actor From Scene eye dropper if that actor's name starts with an underscore "_"

This is a regression. Tested in //UE5/Release-5.1 CL20979098 Variable can't be set by the Pick Actor From Scene eye dropper if that actor's name starts with an underscore "_". ...

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

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

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. ...

Poor Vulkan RHIThread performance in Development builds on some Android

Community-attempted workaround received in [Link Removed] Correct fix submitted to 5.6 FNMain in [Link Removed] which needs integrating into 5.5.3. ...

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

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

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

Volume artifacts (Bleeding)

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

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

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. ...