Unreal Engine Issues

Replication issues & warnings if a client hitches while the server seamless travels

If a client hitches while a server performs a seamless travel, the client will get multiple lines of logspam of these warnings:Warning: UActorChannel::ProcessBunch: SerializeNewActor failed to find/ ...

Changing Static Mesh for a mesh with overridden materials should NOT reset materials

Sometime recently, the behavior of changing a static mesh changed. A very common operation is to want to change a mesh, while keeping material override. Here I have a sky mesh, and the material is ...

Cannot specify custom window positions in "windowed mode" for packaged games

There is an issue where you cannot specify a specific location for a windowed packaged game when using a command line to open the project, the project will move to that position for a brief moment b ...

Material Parameter Collection parameters only return default values when drawn to a Render Target

Material Parameter Collection parameters only return default values when drawn to a Render Target This does NOT happen when drawing a material using a non-MPC parameter. To test this:Open Actor_BP ...

Final Gather Quality Post Process setting causes severe rendering issues in the Stack-O-Bot project

When opening the Stack-O-Bot project in 5.0 Preview 1, the project has a rendering issue where bright shimmering lights appear all around the screen. I discovered that this is due to the PostProcess ...

Server using -useperfthreads command line causes crash if rendering thread is required for function execution

FBX from DAZ Studio import with errors since 4.7.0

Skeletal or Static Meshes exported from DAZ Studio as 2014 FBXs import with errors since 4.7. The same mesh in 4.6.1 imported without perceived errors. [Image Removed] Attached Files: DAZ_Test.fb ...

Disabling the Paper 2D plugin causes a packaged project to not open

When working in a project that is in 4.16, disabling the Paper2D plugin causes a packaged version of the project to not open. This issue is different from previous versions as disabling the plugin i ...

Foliage experiences odd culling when world origin is changed

There is an odd issue occurring when the world origin is changed, changing the world origin causes the foliage to cull in unexpectred ways. The issue can be solved by using the console command "r.Al ...

[CrashReport] UE4Editor_Renderer!FProjectedShadowInfo::AddSubjectPrimitive() [shadowsetup.cpp:793]

This is a trending crash coming out of the 4.18 Preview. User Descriptionsadded a directional light Source Context 779 const FPrimitiveSceneProxy* Proxy = PrimitiveSceneInfo->Proxy; ...