Unreal Engine Issues
Unreal Engine Issues
OnlyTickMontagesAndRefreshBonesWhenPlayingMontages visibility option updates anim instance multiple times
UE - Anim - Runtime - Anim Blueprints - Apr 25, 2024The OnlyTickMontagesAndRefreshBonesWhenPlayingMontages setting added in 5.4 is broken. It only works because it unintentionally forces a second call to UAnimInstance::UpdateAnimation (via RefreshBo ...
Switching between play / simulate in vcam can cause editor to crash.
UE - Virtual Production - Tools - Pixel Streaming - Apr 24, 2024Originated from UDN case: [Link Removed] ...
Repackaging the same build produces different order of shader code chunks in IoStore container TOC
UE - Rendering Architecture - Materials - Apr 24, 2024A licensee reported that packaging the build with same content (it is unclear if they were rebuilding the DDC between the runs, but it shouldn't matter) produces a different placement of code chunks ...
Copy/Paste array of strings in Details Panel adds quotes to entries
UE - Editor - Workflow Systems - Apr 24, 2024Conversation moved to Comments to allow for public visibility. ...
FRuntimeFloatCurve in datatable causes editor crash
UE - Editor - Apr 24, 2024Inside SCurveEditor::ZoomToFitHorizontal and SCurveEditor::ZoomToFitVertical, the program navigates through a TArray<FRealCurve*> called CurvesToFit in a for each loop. Inside the for loop, if the p ...
Performance regression on vegetation assets compared to 2023.2.
TM - Content - Apr 23, 2024It was reported that the same foliage scene between beta1 and beta2 had a big loss in performance. We need to investigate the cause as it seems related to a vegetation re-work effort to improve qual ...
Screen jitters while blending constrained aspect ratio of camera
UE - Anim - Sequencer - Apr 23, 2024The screen jitters when animating the size of the filmback of a aspect ratio constrained Cine Camera. Following behavior was observed by the customer: MRQ: The expected behavior - bars smoothly in ...
Masked TwoSided material causing lumen direct lighting to leak through walls
UE - Graphics Features - Lumen - Apr 23, 2024It appears that LumenScene's Hardware Ray Tracing is causing light leaking into a sealed room (which should be perfectly black). This bug does not appear to happen on AMD GPUs. ...
City Sample vehicle does not always produce an EndOverlap Event
UE - Simulation - Physics - Apr 23, 2024Reported on UDN: Something in the setup of the City Sample vehicles means that if a vehicle starts inside a Box Collider Component then it won't generate an EndOverlap when exiting. Vehicles in ge ...
Creating MaterialInstanceDynamic for a moving/crumbled geometry collection component, the rendering position is reset to the initial location
UE - Simulation - Physics - Destruction - Apr 23, 2024Creating a MID makes the render state dirty and the engine will recreate a new scene proxy without the current attitude. This results in rendering the object in incorrect location. Here is a tempor ...