Unreal Engine Issues
Unreal Engine Issues
Map actor reconstruction does not reattach external non-root components
UE - Gameplay - Components - Jan 17, 2024For two map placed actors, if one actor B's non root component is attached to another actor A, the attachment is not retained when actor A reruns its construction script, such as when moving actor A ...
Blueprint Instanced Variables Data Erased
UE - Gameplay - Blueprint - Jan 17, 2024Instanced variables were given a fix in response to this issue: [Link Removed] Once implemented, when the project is compiled the data from the blueprint instanced variable is removed. A recommend ...
AMD PSO creation causes hang in SceneCapture2D with Nanite + ShowOnly primitives
UE - Graphics Features - Nanite - Jan 16, 2024AMD RX 6800 XT driver appears to hang (or take a very long time) in the PSO creation of the FInstanceCullVSM_CS shader when using Nanite primitive filtering NOTES:Issue can be worked around by addi ...
Depth of field rendering artifacts - flickering and masking
UE - Rendering Architecture - Jan 16, 2024Flickering and large flashes can be seen on reflective objects that are out of focus with DOF enabled. DumpGPU shows that artifacts are visible in TSR . ...
Pixel Inspector does not display Gbuffer values properly when a mesh with a material that has Anisotropy set is in Level
UE - Graphics Features - Jan 16, 2024This issue occurs when there is a material with Anisotropy, like the attached GIF.[Image Removed] ...
Pre-UE5 serialized FVariant FVector data corruption when deserialized in UE5
UE - Gameplay - LWC - Jan 15, 2024FVariant is a struct that implements a union of data types, including FVector. When assigning an FVariant an FVector value in engine versions UE 4.27 or earlier, the FVariant will deserialize incorr ...
Applied external forces to vehicles may be nullified by sleeping
UE - Simulation - Physics - Solver - Jan 12, 2024If Entering sleeping state and applying external force are same time, the external force is nullified and the vehicle stops immediately. p.Chaos.Solver.SleepEnabled 0 or __ setting SleepLinearVel ...
Double clicking on Interface Function in Blueprint Graph does not take you to the function implementation.
UE - Editor - Jan 11, 2024When double-clicking on an interface function call within a blueprint, the expected behaviour is that it will take you to the implementation of this function. However, it currently does nothing. ...
Capturing backtrace of another thread in engine built with clang raises access violation exception
UE - CoreTech - Jan 11, 2024Engine built with Clang throws an exception when calling RtlVirtualUnwind with a different thread ID. Engines built with Microsoft compilers do not occur this problem. For example, if starting PI ...
Animation viewports can cause debug print messages to be purged
UE - Anim - Rigging - Control Rig - Jan 11, 2024A change was made a while back so that control rig debug print messages would be displayed in the animation editor preview windows. This is done via calling UEngine::DrawOnscreenDebugMessages from ...