Unreal Engine Issues
Unreal Engine Issues
Root Motion interpolation is incorrect when use URO
UE - Anim - Runtime - Aug 3, 2018According to Licensee's report, Root motion is incorrect when use URO. I Investigated, in the case of "Montages Only" become TrailMode in URO. Normally Animation Interpolation has implementation, ...
Movie Scene Capture - DX12 Render Artifacts and Delay
UE - Rendering - Architecture - RHI - Jun 19, 2023If using the Legacy renderer (Movie Scene Capture) with DefaultRHI DirectX12, there's new delay and also some frames get weird artifacts. However, the delay and artifacts do not appear when using ...
Collision Boxes not set properly when using negative values
UE - Simulation - Physics - May 15, 2015When using multiple collision boxes with the mesh scaled in a negative axis while the collision boxes are rotated that the rotation is not taken into account when using the negative scale. ...
Client Ensure FShaderMapResource_SharedCode::ReleaseRHI is still referenced on exit/shutdown
UE - Niagara - Rendering - May 7, 2024Very rarely, the game client will crash on shutdown and the log will contain messages that look like: LogOutputDevice: Error: Ensure condition failed: false [File:Engine\Source\Runtime\RenderCore\ ...
Creating Destructible with PhysXLabs and Fracture Tool in UE4 yield different results and same settings
UE - Simulation - Physics - Destruction - Feb 25, 2015When creating fracturing a mesh in PhysXLabs vs UE4 fracture tool with both using Voronoi fracture and set to 25 chunks will give different results. The mesh (Attached below along with reference i ...
The Temporal console variable has the wrong value
UE - Graphics Features - Aug 20, 2019The r.SSR.Temporal console variable value is always set to its debugging value of 0 instead of being at its default of 1 Tested in 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 P6 (CL - 798402 ...
Editable text boxes (UMG) are displying the incorrect character when packaging to HTML5
UE - Platform - Mobile - Feb 10, 2015When you add a editable text box to a project via UMG and package and deploy that project for HTML5, The Text box will show invalid characters when certain keys are pressed. I have attached a photo ...
Sequencer animations using Skeletal Mesh Pose don't play properly if following another sequence with an animation using Keep State
UE - Anim - Sequencer - Feb 20, 2019The bug affects skeletal mesh animations when played in sequencer with AnimBP after another animation which was set to Keep State. This is a follow-up to [Link Removed]. Two animations now play cor ...
Build lighting for single stationally light level generates a shadow map in PF_B8G8R8A8 format
UE - Texture - Nov 1, 2024Texture format override to BGRA8 due to changes in CL-30603716. The following code can restore the previous behavior. void FShadowMapPendingTexture::StartEncoding(ULevel* LightingScenario, ITexture ...
Updates to DesiredFocusWidget for a UserWidget are not propagated to existing instances of it inside the WidgetTree of other widgets
UE - Editor - UI Systems - Nov 17, 2025This issue has been reproduced in UE 5.3 to 5.7 and source versions. A repro project is available. Below are the findings from an initial investigation of the problem. Normally, when a UserWidget p ...