Unreal Engine Issues
Unreal Engine Issues
Changing reflection capture resolution after setting preview rendering level to Android ES3.1 crashes the editor
UE - Graphics Features - Nov 20, 2019Applying a new reflection capture resolution after changing Preview Rendering Level to Android ES3.1 results in crash. Tested in: 4.24 P3 CL#10283392 4.25CL#10303496 ...
Overlapping Lightmap UVs Generated When Not In None LOD Group
UE - Graphics Features - Lumen - Dec 17, 2019Overlapping lightmaps are generated when the LOD group is not the default. Setting the LOD group to None and rebuilding lighting doesn't have the same result. Found in 4.24 CL# 10570792 Reproduced ...
Niagara Map Set parameters are improperly named
UE - Niagara - Mar 9, 2020Parameters are misnamed when adding a new parameter to Map Set in a Niagara Module Script Tested: 4.23.1, 4.24.3 , 4.25 preview, 4.26 (main) ...
OnAudioPlacebackPercentage PlaybackPercentage (float) doesn't take into account "Start Time" from Play or FadeIn nodes
UE - Audio - Aug 17, 2020PlaybackPercent on the OnAudioPlaybackPercent event does not account for Start Offset from the Play or FadeIn node. Reported and tested in version 4.25.3 (CL-13942748) and version 4.24.3 (CL-115903 ...
Text Render Actor with Material Instance using Parameter crashes when playing Standalone Game
UE - Rendering Architecture - RHI - Aug 31, 2020Material Instance with Parameters on Text Render Actor causes crash when playing in Standalone. Reported and tested in version 4.25(CL 13942748). Works as expected in 4.24(CL 11590370). ...
Screen Space Reflections not showing in Panoramic Capture
UE - Graphics Features - Sep 10, 2020Reflections not showing in Panoramic Capture images. Reported and tested in versions 4.25.3(CL 13942748), 4.24.3(CL 11590370), and 4.23.1(CL 9631420). ...
Movable point light disappeared by MinScreenRadiusForLights and appeared back looks deemed.
UE - Platform - Mobile - Jun 25, 2021The movable point light is abnormally lit when it disappeared by the setting of r.MinScreenRadiusForLights rather than "Max draw distance" and appears back. After you disable and enable the "Affect ...
Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling
UE - Editor - Workflow Systems - Jan 11, 2022This is a regression.This does not affect UE5. Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling. In 4.26 and UE5 the code compiles without issue, and the user ...
MemReport does not seem to respect mesh streaming
UE - Rendering Architecture - Aug 6, 2024The function "FStaticMeshLODResources::GetResourceSizeEx(...)" does not take into account that the buffers might be emptied, due to Mesh Streaming. This causes "obj list" to report sizes larger than ...
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...