Unreal Engine Issues
Unreal Engine Issues
Scrolling the mouse wheel slowly on Mac does not have any effect in the editor
UE - Platform - Apple - Jan 19, 2017REGRESSION No, occurs in 4.14.3 On Mac, scrolling slowly (one or two notches) does not have any affect in editor, whereas on the Windows, this has full effect. This was seen in editor (with scroll ...
Split Struct nodes do not update if the struct variable is changed
UE - Gameplay - Blueprint - Aug 30, 2017If a struct variable inside a blueprint has its node split, changing the variable form one struct to another does not update the split pin. Recombining / resplitting the struct has no affect. Work ...
Dynamic NavMesh disappears when loading/unloading SubLevels
UE - AI - Nov 9, 2018A DynamicNavMesh within a NavMeshBoundsVolume placed in a SubLevel will disappear if loading/unloading another SubLevel that has completely nothing to do with the DynamicNavMesh. Using a setup with ...
Sequencer Batch Rendering cannot output multiple render passes in CLI
UE - Anim - Sequencer - Nov 27, 2018Batch rendering still works if launched from the engine using Sequence Render Movie. However it only outputs the first CustomRenderPass argument when attempting it from a Command Line Interface. Thi ...
Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level
UE - Graphics Features - Dec 5, 2018Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...
Certain materials are overly bright with Ray Traced Global Illumination denoiser
UE - Graphics Features - Lumen - Mar 14, 2019Ray Traced Global Illumination is causing some materials to glow extremely bright Disabling r.raytracing.globalillumination.denoiser fixes the issue In 4.22 preview 5 binary (5365847) the result i ...
Large Amount of Aliasing in Ray Traced Reflections
UE - Graphics Features - Lumen - Apr 9, 2019There is a large amount of aliasing on ray traced reflections. The reflections look as expected until you zoom in on the sphere (press Z or C to zoom in/out). The reflections become very noticeably ...
Combo Box String widget doesn't change color via function
UE - Editor - UI Systems - Slate - Sep 24, 2019Attempting to change the Foreground color of a Combo Box String in the Graph tab of the owning widget Blueprint has no effect. Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22.3 (CL - 7 ...
Sky Atmosphere Material Nodes not Correctly Represented in the Surface Cache for Nanite Enabled Static Meshes
UE - Graphics Features - Apr 1, 2025When nanite is enabled on a static mesh, lighting contributions from Sky Atmosphere material nodes are not incident on the static mesh and no longer present in the overall lighting of the scene. Th ...
Video length indicator no longer works
TM - Tools - Oct 21, 2025Reported in SF [Link Removed] In videos containing multiple parts, the cumulative time indicator that shows the full length of the video no longer works correctly and will incorrectly display a len ...