Unreal Engine Issues
Unreal Engine Issues
Volumes with infinite or missing faces when importing .fbx file
UE - LD & Modeling - Modeling Tools - BSP - Sep 16, 2024UDN Description: We are having issues with the "Create Blocking Volume" tool on StaticMeshActors. When we create a convex blocking volume (any convex, rough or heavy), we often have volumes that ha ...
CSM shadow casters falsely culled due to incorrect primitive octree test
UE - Graphics Features - Shadows - Sep 13, 2024While setting up whole scene shadows, CasterOuterFrustum is used to cull shadow casters from PrimitiveOctree. CasterOuterFrustum doesn't extend far back enough, which means that if an octree node fi ...
Crash in NaniteStreamManager when Nanite data fails to decode corrupt data from DDC
UE - Graphics Features - Nanite - Sep 11, 2024If Nanite data becomes corrupt in the DDC, the Editor may crash in FStreamingManager::InstallReadyPages() when the Pending.State is FPendingPage::EState::DDC_Ready but the resulting SrcPtr is null b ...
Swapping the Child Actor Class of a ChildActorComponent back to a previously selected BP leads to an Editor crash from illegal Renaming
UE - Gameplay - Components - Sep 11, 2024A fatal error occurs if we change a Child Actor Class from one BP (ex. "BP_A") to a different BP ( ex. "BP_B") and later change it back to the first BP (ex. "BP_A") without compiling the BP between ...
Assert in MoviewPipelinePIEExecutor when cancelling movie scenes during rendering
UE - Anim - Sequencer - MRQ - Sep 11, 2024When rendering a single Level Sequence with MRQ, removing the Level Sequence that is actively rendering will create an array out of bounds exception. Also confirmed in //UE5/Main, CL: 36086643 ...
Creating an HLOD with a FallbackMesh that has a section with triangles=0 will incorrectly set the UVs of the StaticMesh
UE - World Creation - Worldbuilding Tools - HLOD - Sep 11, 2024The UVs in HLOD's StaticMesh appear to be broken when there are sections with zero triangles in the fallback mesh. This is most likely the case for sections containing only small parts. Workaroun ...
OnlineServices-Lobbies: Crash when host migration message is received and the next host has already left the session
UE - Online - Sep 9, 2024A crash occurs at FindChecked in the code below.if (PreparedServiceChanges->OwnerAccountId) { InternalPublicData->OwnerAccountId = *PreparedServiceChanges->OwnerAccountId; if (bDispatchNot ...
During SIE (simulate) and ejected-PIE, modifying a map actor causes triggers RerunConstructionScript() which discards all runtime modifications to SCS components
UE - Gameplay - Blueprint Runtime - Sep 6, 2024When Simulating, or Playing-In-Editor and ejected, modifying an actor in the editor world causes the SIE/PIE runtime actor to recreate its blueprint added components via AActor::RerunConstructionScr ...
Anim Composite root motion preview is broken
UE - Anim - Gameplay - Sep 6, 2024LoopAndReset preview option is broken after one loop for anim composites ...
Enabling ZenLoader causes editor crash when undoing Level Instance deletion
UE - Foundation - Core - Sep 5, 2024Crash reported through UDN. With ZenLoader enabled, deleting a level instance and triggering Undo causes a crash in ULandscapeComponent::PostEditUndo() The user has provided an example project th ...