Unreal Engine Issues
Unreal Engine Issues
r.AllowOcclusionQueries 0 keeps increasing PrimitiveOcclusionHistorySet memory
UE - Rendering Architecture - RHI - Nov 29, 2022r.AllowOcclusionQueries 0 skips the call to TrimOcclusionHistory(), so the PrimitiveOcclusionHistorySet container continues to grow. ...
OSVR is affected by screen percentage Post Process volumes
UE - Platform - XR - May 6, 2016Found on: //UE4/Dev-VR CL-2967563 Screen percentage post process volumes affect rendering on the OSVR. It also renders incorrectly when affected. The incorrect effect has been logged as [Link Remo ...
Mover MoveDirectionIntent can be 0 due to interpolation
UE - Gameplay - Player Movement - Apr 22, 2025If two states have MoveDirectionIntent vectors that are opposite to each other, interpolating between these states can result in MoveDirectionIntent being 0. This may cause issues for animation blue ...
Chaos Cache : When Min Speed To Spawn Trailing Particles > 0, particles are never spawned by chaos cache trailing events
UE - Niagara - Data Interface - Jul 26, 2024Because UniagaradataInterfaceChaosDestruction::HandleTrailingEvents does not respect incoming TrailingEvent data, the debris velocity during chaos cache playback is always evaluated as zero. The fo ...
Fade track is not affected by "Restore State" flag
UE - Anim - Sequencer - Mar 24, 2017Fade track is not affected by "Restore State" flag Regression: Sort of. Restore State wasn't available in 4.14, but the default behavior would leave the screen black Worked: 3249277 (4.14.3) Bro ...
Vehicle destroyed when long stiff value is set to 0
UE - Simulation - Physics - Jan 3, 2019When setting the Long Stiff value to 0 for wheels it appears to destroy the actor as soon as the wheel come in contact with the ground ...
Crane Yaw value affects attached Camera Rotation
UE - Anim - Sequencer - Aug 18, 2016Crane Yaw value affects attached Camera Rotation. My expectation is based on the fact that Crane Pitch leaves the camera level ...
Setting scale to 0 in any direction breaks overlap events
UE - Simulation - Physics - May 26, 2015When the scale of an actor is set to 0 in either X, Y or Z any overlap events will fail to trigger overlap events. ...
PVRTC texture is sampled as white when the uv value is very close to 0
UE - Platform - Mobile - Oct 20, 2021When the uv value is very close to 0 ( < 0.001 ), the boundary value of the PVRTC texture is sampled as white. please refer to attached images and sample project. problem goes away when changing th ...
FDeferredDecalProxy cannot be initialized to not fade even if FadeDuration is set to 0
UE - Rendering Architecture - May 16, 2024FDeferredDecalProxy always fade because InitializeFadingParameters is always called and leaves InvFadeDuration at 1.0 and the LifetimeAlpha calculation in FDeferredDecalPS::SetParameters gets a very ...