Unreal Engine Issues

Unable to change collision profile on static mesh component to a specific profile.

r.ShaderpipelineCache.StartupMode=0 does NOT work property

r.ShaderpipelineCache.StartupMode=0 is a option for stop precompile using PSO Caching, but it doesn't work properly. After CL-5837455, FShaderPipelineCache::ResumeBatching() is always called in FEn ...

Crash occurs when RayTracing.ExcludeDecals is enabled

The cause of the crash is out-of-range access to the array. ExcludeDecals eliminates the mesh instance to which the decal material is assigned, but it seems that the MeshCommand has been registered ...

DrawDebugString display wrong position in PIE when changed display scale

The display position of the text in DrawDebugString is affected by the scale of the display. Should refer to the Project() of DebugCanvas (not Canvas). -  Suggest Code void AHUD::DrawDebugTextL ...

Crash occur when switching the Ray Tracing shadow function when only shadow is enabled in the Ray Tracing

According to the licensee, this problem is caused by a variable inconsistency in Cvar. The cause seems to be the difference between the CVar reference when generating RayTracingSceneRHI and the CVa ...

Can not output the log that is "Category=LogActor, Verbosity=log"

The LogActor is set to "CompileTimeVerbosity=Warning", so it cannot output more than the "Warning" level. ENGINE_API DECLARE_LOG_CATEGORY_EXTERN(LogActor, Log, Warning); Suggest the following  ...

Functions containing Unicode characters break nativization on Clang-hosted target platforms.

The UHT boilerplate code that's generated from a converted Blueprint class header file generated from a Blueprint class containing one or more function names with non-ASCII characters will fail to c ...

Double quotes in SetupAndroid.bat may cause issues in paths

There are a few ways to end up with double-quoted paths inside of double quotes, including the case where user path does not already contain any paths. ...

Default UE splash logo appears briefly when launching an application with an alternate launch image on iOS

Various users have reported seeing the default UE splash logo appear briefly before their custom launch screen appears. This was reported to have been seen in 4.25, and did not occur for users in 4. ...

Crash running construction script after compiling BP function library

Editor can assert when changing the signature of an editor authored Blueprint Library Function (FuncA) if that function is called from a Blueprint Library Function (FuncB) via an actor's constructio ...