Unreal Engine Issues
Unreal Engine Issues
Light components stay visible if "Actor Hidden In Game" is checked
UE - Graphics Features - Feb 6, 2017Light components stay visible if "Actor Hidden In Game" is checked. This issue occurs even when other components (such as a static mesh) are no longer visible. I tested with a static mesh component ...
DeltaTime returns inaccurate time when Tick Interval is positive
UE - Gameplay - May 30, 2017When disabling/enabling tick at runtime, if (TickInterval == 0) then DeltaTime returns as the length of a frame, but if (TickInterval > 0) DeltaTime returns as the length between when tick was disab ...
Gear VR appears Choppy when add Widget components to the scene
UE - Platform - XR - Aug 1, 2017Gear VR appears Choppy when add Widget components to the scene (this issue was not present in earlier version of the engine in the same project (4.16 appears to be a regression for 4.17)) Note: The ...
Interface with one or more BlueprintNativeEvent declarations will lead to a compile failure during packaging with Blueprint nativization enabled.
UE - Gameplay - Blueprint - Nov 14, 2017In the UHT boilerplate that's generated for the FGUseableInterface type, there is a pure virtual declaration that's emitted for the BlueprintNativeEvent's required _Implementation() method: #define ...
When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float"
UE - Gameplay - Sep 13, 2019When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float". Found in 4.22.3 CL#7053642 Reproduced in 4.23.0 CL#8386587, 4.24.0 Main CL#8671808 ...
[Quartz] - The multiplier does not always respected on the Quartz Quantization Boundary
UE - Audio - Quartz - May 13, 2022Increasing the multiplier past a certain point causes sounds on a Quantization Boundary to struggle to play at the correct time. The repro above uses 1/32, but this also repros with other values. ...
Foot Placement Node does not account for Mesh and Actor Scale
UE - Anim - Runtime - Anim Blueprints - Jun 17, 2025When scaling down the character in the Game Animation Sample to 0.1 (Actor Scale or Mesh Scale), the lower body becomes crouches, not taking into account the difference in pelvis and foot difference ...
App crashes when Launching on or launching packaged project on tvOS or iOS
UE - Platform - Mobile - Aug 1, 2016Launch on to tvOS crashes the app on the device and returns the user to the main screen. This also affects packaged projects Update Project packaged in shipping configuration launched successfully ...
USkinnedMeshComponent::PredictedLODLevel can be set below MinLOD
UE - Anim - Rigging - Aug 12, 2019Within USkinnedMeshComponent::UpdateLODStatus_Internal, if the USkinnedMeshComponent does not yet have a MeshObject, MaxLODIndex will be left as 0 and as a result PredictedLODLevel will be set to 0 ...
Nodes to the right of an Abort Both node in a Behavior Tree appears to still receive a tick
UE - AI - BehaviorTree - Feb 6, 2023This is a regression. Tested in //UE5/Release-5.0 CL20979098 Behavior Tree appears to tick nodes to the right of an aborted node that is set to abort Both. Those nodes are not executed, but visuall ...