Unreal Engine Issues
Unreal Engine Issues
Long thin spinning objects take too long to stop spinning
UE - Simulation - Physics - Solver - Jun 5, 2023See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...
Objects without custom delta properties can return false for CanSkipUpdate with net.PushModelSkipUndirtiedReplication enabled
UE - Networking - Jun 5, 2023This seems to occur after receiving a Nak for certain actors. FObjectReplicator::ReceivedNak will decrement SendingRepState.CustomDeltaChangeIndex even if the object has no custom delta properties. ...
Dormancy validation log warnings when COND_Never property changes
UE - Networking - Jun 2, 2023FRepLayout::DiffProperties doesn't check if the property's conditions is COND_Never or if the Parent Cmd's flags have the ERepParentFlags::IsLifetime flag (which FRepLayout::InitFromClass doesn't se ...
Cooker Generated Packages: Actors can trigger the "load" of generated packages from linker load and load them incorrectly
UE - Foundation - Data Pipeline - Cooker - May 31, 2023Generated packages have to be constructed by the cooker via FGeneratorPackage::CreateGeneratedUPackage. Some fields on the UPackage are set and ICookPackageSplitter->PopulateGeneratedPackage is call ...
Visual Noise on Thin Translucent materials with a Directional Light
UE - Graphics Features - May 30, 2023Regression in testing This occurs with hardware and software ray tracing, as well as moveable and static lights This occurs regardless of anti aliasing. This was tested with DX12 ...
AutoCreateRefTerm UFUNCTION meta specified can interfere with function default arguments
UE - Framework - Blueprint Editor - May 25, 2023Example function provided by the user:.h UFUNCTION(BlueprintCallable, meta = (AutoCreateRefTerm = "TestInt,TestName")) static void TestAutoRefs(const int32& TestInt = 2, const FName& TestName = ...
Cannot assign a MediaTexture asset to a Brush -> Image in Widget Blueprint
UE - Virtual Production - Media - May 23, 2023Can't assign Media Texture assets to the Brush->Image property in Images on Widget Blueprints. This workflow is explicitly mentioned as a step in these docs, so if this is no longer the correct meth ...
Static, non-replicated actors have different role to dynamically spawned actors
UE - Networking - May 23, 2023For a non-replicated actor, the expected values for its local and remote roles would be ROLE_Authority and ROLE_None respectively. However, in ULevel::InitializeNetworkActors, ExchangeNetRoles(true) ...
Merge Actors Tool Simplifies Nanite Meshes
UE - World Creation - Worldbuilding Tools - Merge Actor - May 19, 2023Tried every combination of LOD Selection Type, Nanite enanbled/disabled, the only way it would seem to get the full number of triangles from the source mesh into the merged mesh is to disable Nanite ...
Instanced properties do not update in actors placed in a level that is not currently open
UE - Framework - Blueprint - May 17, 2023The user is specifically having a problem with TArray<TObjectPtr<>> however I have also reproduced this error using a single TObjectPtr<>, raw uobject pointers & all three previous methods within a ...