Unreal Engine Issues
Unreal Engine Issues
With Ray Tracing Enabled And The RenderDoc Plugin Enabled Shadows Don't Render Correctly On Reflective Materials
UE - Graphics Features - Lumen - Jan 23, 2020When the RenderDoc plugin is installed with raytracing enabled shadows don't render correctly. Found in 4.24.1 CL#10757647 Reproduced in 4.23.1 CL#9631420, 4.25 Main CL#11087956 ...
Motion vectors not generating correctly in build
UE - Simulation - Physics - Nov 3, 2023Also tried using “show VisualizeTemporalUpscaler” and noticed the frames that have missing motion vector data showed up as pops in the “show VisualizeReprojection” part of the visualizer. ...
Lumen reflections break when the normals don't match the pixel depth information.
UE - Graphics Features - Lumen - Oct 23, 2025Lumen Reflections can leave black spots in chrome materials with strong normals. Also tested on UE 5.5, CL: 41545209 and UE 5.6, CL: 45232827 ...
Adding to Struct causes 'Inappropriate Outermost' warnings
UE - Gameplay - Blueprint - Jun 2, 2015Adding to Struct causes 'Inappropriate Outermost' warnings to be spammed to the Output Log ...
Actors re-scale to original size when attached to other actors
UE - Gameplay - Nov 21, 2014Actors rescale to their original size when placed in level then attached to another actor. ...
Increment and decrement nodes return the incorrect value
UE - Gameplay - Blueprint - Jun 23, 2015Increment and decrement nodes return the incorrect value User Description: Getting the result of the Increment Macro seems to be incrementing the variable twice. Very confusing. Is this normal? ...
Changing code based component category causes component to become ineditable in blueprints
UE - Gameplay - Blueprint - Mar 27, 2015When a component written in code has it's category setting changed in blueprint the rest of the details for that component will not be editable once the component is deselected and reselected. ...
Set end frame has incorrect bounds type
UE - Anim - Sequencer - Mar 31, 2020When calling Set End Frame the TRangeBound type defaults to inclusive causing the range to go from [0, 50) to [0, 50]. This causes the section to last for one frame longer than it should. ...
Distance Field shadow culling when view is at certain angles
UE - Graphics Features - Aug 4, 2015Distance Field shadows are culled for larger meshes at certain angles of the cameras view position. Map with reproduced setup is attached. ...
Physical materials cannot be queried
UE - Rendering Architecture - Materials - Feb 12, 2015Physical materials placed on starter content shapes always return as invalid for any trace or collision query. ...