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

Tools - Oct 18, 2016

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

Rendering - Feb 20, 2017

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

DevTools - Hot Reload - Dec 5, 2017

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

Gameplay - Blueprint - Jan 4, 2018

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

Media Framework - Jan 29, 2018

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]

Rendering - Mar 27, 2018

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

Editor Crashes When Reopened Project's Level that Contains Vertex Painted Asset is Opened

Tools - Apr 17, 2018

Editor crashes when asset is imported in as a skeletal mesh, brought into a level, vertex painted using the paint tab under modes, all assets are saved, project is reopened, then level is reopened. ...

Widget clips incorrectly when added at runtime

Tools - UMG - May 14, 2018

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).

Gameplay - Blueprint - Jun 7, 2018

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

Rendering - Feb 3, 2017

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. ...