Unreal Engine Issues

Nested material functions can generate duplicate shader code

Multitouch on Windows offsets touch index by 1, starting at TouchIndex_2

Touch input on Windows devices will start at touch index 2 instead of touch index 1, like other touch devices. ...

Editor Crashes On Startup After Enabling Light Propagation Volume (LPV) With Forward Shading

After enabling Forward Shading that project can no longer operate while "r.LightPropagationVolume = 1" since it will crash immediately. ...

Hot Reload wipes all elements of UProperty TArrays in Blueprint subclasses

Hot reloading a change that affects a class that contains a TArray UProperty will wipe all of the array elements of any Blueprint subclasses of that class. Regression?: Yes This does not occur in 4 ...

Blueprint Nativization Build Error Caused by Child Actor Component

A licensee upgraded their project to 4.18 and started to receive a compiler error when trying to build a project. This was tested in both their upgraded project and a fresh 4.18 project and the resu ...

Audio/Video out of sync after seek

There is an issue that sometimes occurs when using the seek option in the media player while the Decoder is set to WMF. When this happens the audio desyncs from the video and for the rest of the vid ...

[CrashReport] UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHISetShaderResourceViewParameter() [d3d11commands.cpp:512]

No user comments in crash group 500 void FD3D11DynamicRHI::RHISetShaderResourceViewParameter(FVertexShaderRHIParamRef VertexShaderRHI,uint32 TextureIndex,FShaderResourceViewRHIParamRef SRVRHI ...

Widget clips incorrectly when added at runtime

When adding a widget at runtime the widget it appears to clip in correctly. If the widget is more than half way off the screen, the entire widget disappears. ...

Build failure after nativizing any child Blueprint class with function override (regression).

Nativization regression in 4.20 preview 1. Cannot nativize overridden functions. Log Output:UATHelper: Packaging (Windows (64-bit)): D:/Projects/Unreal/NativizeMethod/Intermediate/Plugins/Nativized ...

Crash When Two PostProcess Volumes Are Selected Simultaneously

Once you add two postprocess volumes (one to the persistent level and one to a sublevel) then add a blendable element to each, and then try to select both a crash will occur. ...