Unreal Engine Issues
Unreal Engine Issues
Non wrapped UVs in static mesh cause incorrect UVs on (HLOD) merged static mesh
UE - World Creation - Worldbuilding Tools - HLOD - Apr 27, 2016HLOD seems to Generate Lightmap in the wrong UV Channel. Export a specific LOD and generating Light Map UVs, it seems like the lightmap UVs are always generating in the the channel 0, messing up th ...
Using the output from FindAllPakFiles to call StreamableManager::RequestAsyncLoad causes a crash
UE - Foundation - Core - Apr 22, 2016A user has reported a problem where the directory that is output from FindAllPakFiles is not compatible with the StreamableManager::RequestAsyncLoad function and will cause a crash if using the two ...
Calling FAudioDevice::StopAllSounds from UEngine::CommitMapChange asserts
UE - Audio - Jan 5, 2017Per https://udn.unrealengine.com/questions/329261/stopallsounds-fails-check-with-level-streaming.html The audio threading work missed a case where an audio thread only function was being called fro ...
Spawned Actors do not appear in World Outliner
Tools - May 11, 2019Spawning actors from a Blueprint via the SpawnActorFromClass function at runtime does not cause the World Outliner to update. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 64 ...
Draw to Render Target Android Regression
UE - Graphics Features - May 15, 2019Regression in Draw Material to Render Target functionality. Enabling Mobile HDR is a workaround. Android tested with Note 4 Unable to verify Main CL 6395234 (Crash on Phone) No repro on iOS mo ...
AspectRatioAxisConstraint forced to be AspectRatio_MaintainXFOV
UE - Anim - Sequencer - Jun 19, 2019A licensee wants to enforce YFov constraint for a game project by setting AspectRatioAxisConstraint=AspectRatio_MaintainYFOV in the config. However during playing the sequence, the value of AspectR ...
Importing Camera FBX into a sequence can crash with a headless editor
UE - Anim - Sequencer - Mar 19, 2021In a headless editor instance we will not be able to send toasts to the user, and we should not notify slate. The Sequencer Tools function library calls MovieSceneToolHelpers::ImportFBXCameraToExist ...
Duplicating skeletal mesh assets with groom in world outliner changes Hair UV layout
UE - Rendering Architecture - Materials - Dec 10, 2021Having duplicate characters with groom, hair UV layout changes which results in visible shift in character look and also changes color based on camera distance and lights in the scene (hair would fl ...
APlayerController::IsPlayerMuted no longer supported on clients
UE - Online - Nov 9, 2022Recent changes to the player controller's mute functions have resulted in the MuteList not being updated on clients, and instead APlayerController::ClientMutePlayer now just directly calls MuteRemot ...
Dumping of world partitioned HLOD stats fails in commandlet
UE - World Creation - Worldbuilding Tools - HLOD - Jan 27, 2025Dumping of world partitioned HLOD stats in commandlets no longer works since updating to Unreal 5.5. The cause seems to be that the functionality has been moved from UWorldPartitionHLODRuntimeSubsys ...