Unreal Engine Issues
Unreal Engine Issues
UDIM UVs are wrong
UE - Graphics Features - Feb 19, 2020UE4 applies 1-x transform to V coordinate when importing UVs from mesh. This is to handle GL/D3D differences in texture origin, but it breaks UDIM page addressing. It's possible to apply a fix to ...
Second controller input doesn't work setting client mode on PIE.
UE - Editor - UI Systems - Feb 3, 2021When two controllers connected, player2 input is disabled in client mode in PIE. It worked correctly in 4.25, but it has been wrong since 4.26. Digging into FSlateApplication::ProcessKeyDownEve ...
Pink lighting artifacting on Mac
UE - Graphics Features - Lumen - Mar 23, 2023There are pink lighting spots around the level when opening ContentExamples on Mac. Lighting starts out more intense but fades as the level loads in. Also occurs in new FirstPersonBlueprint templat ...
[CrashReport][Crash] crash at exit due to pending perforce background tasks
UE - Editor - Workflow Systems - Jul 16, 2024Users affected: 440 Total occurrences: 672 Last occurrence: July 16th 2024, 2:40:01 pm First occurrence: December 31st 2023, 1:47:28 pm Latest version: ++UE5+Release-5.3-CL-29314046 Platform: Win64 ...
In Vehicle sims, CenterOfMass override isn't factored into UpdateMassProperties
UE - Simulation - Physics - Mar 24, 2025Origin from this UDN ticket, https://udn.unrealengine.com/s/question/0D5QP00000sGtbO0AS/chaosvehiclemovementcomponent-intertia-tensor-isnt-adjusted-for-center-of-mass-override?fromCase=1 TLDR is th ...
Level editor viewports crash when deleting actors after a layout change
UE - Editor - Workflow Systems - Apr 18, 2022Reported by a customer while testing USD import. See additional URL ...
OnRep_ReplicatedAnimMontage causes popping when montage ends
OLD - Anim - Oct 8, 2016UAbilitySystemComponent::OnRep_ReplicatedAnimMontage doesn't handle some edge cases when stopping the montage when blending is involved. Namely, it's possible on a client (due to latency, etc.) that ...
Duplicated bp components incorrectly double their transforms when created
UE - Gameplay - Blueprint - Jan 4, 2017Add a light to a blueprint Move it away from the origin Right click on the component and duplicate it Notice that the new light is now a child of the previous light and that its transform is now in ...
[CrashReport] UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState()
UE - Graphics Features - Aug 10, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: SEGV_MAPERR at 0x3 Most recent us ...
Owner No See option does not correctly apply to widgets using screen space
UE - Editor - UI Systems - Aug 17, 2017When using the Owner No See option with Widgets, if the widget is set to display on the screen rather than the world, then the option does not affect the widget as intended. Other forms of changing ...