Unreal Engine Issues

Lighting Build Fails With High Density Foliage

Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...

Send "Enter Key" is not working with press and release key in Web Browser plugin

When trying to send the Enter Key to Web Browser using the Press and Release function, it does not work. This function works with any other key that you try to send. A repro project is attached tha ...

Mobile Deferred Shading enabled and Preview Level Android Vulkan will crash the editor

[CrashReport] UE4Editor-MetalRHI!MetalLLM::LogAllocTexture(mtlpp::Device&, mtlpp::TextureDescriptor const&, mtlpp::Texture const&) [MetalLLM.cpp:240]

Generated from CrashReporter ...

UE4Editor crashes while closing on Ubuntu 14.04

UE4Editor crashes when closing on the Ubuntu 14.04 machine. I do not see this issue on my Ubuntu 16.04 machine. ...

Editing sets and maps of structures does not correctly check for duplicates

Customer created a custom DataTable with a TSet Property and saw the behavior of allowing duplicate elements within the TSet, which is not allowed. See TSet Documentation for more information. This ...

[CrashReport] UE4Editor-MetalShaderFormat!SingleCompilerSetup(EAppleSDKType) [MetalShaderCompiler.cpp:716]

Generated from CrashReporter ...

Crash When Loading a SubLevel With HierarchicalInstancedStaticMeshComponent and SphereReflectionCapture via the Levels Window

The editor crashes when loading a SubLevel with HierarchicalInstancedStaticMeshComponent and SphereReflectionCapture via the levels window. Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# ...

App crashes on launch when packaged for Vulkan with Scalable 2D/3D

No Vulkan SDK was installed Crashed on a Nexus 6P ...

After importing morph target: Ensure condition failed: Referencing SkeletalRenderGPUSkin.cpp

Hit handled ensure when dragging the slider in Morph Target PreviewLogOutputDevice: Error: Ensure condition failed: DynamicData->MorphTargetWeights.Num() == LODModel.MorphTargetVertexInfoBuffers.Get ...