Unreal Engine Issues
Unreal Engine Issues
Hardware Lumen Surface Cache Artifacts on Nanite Geometry
UE - Graphics Features - Lumen - Sep 1, 2025When using Hardware Lumen with Nanite-enabled meshes in UE 5.6+, black / dark surface cache artifacts appear that result in generally darker and unstable lighting. These artifacts are not immediatel ...
When using StringToBytes() it returns an incorrect value
UE - Foundation - Core - Jan 4, 2018When using the StringToBytes() function it returns one less byte due to the -1 at the end of the return. The function takes a string and converts it to bytes but it always returns one less byte than ...
USourceControlHelpers::GetFilesInDepotAtPath is broken
UE - Editor - Apr 24, 2023The p4 files command is used to grab the list of depot files. This does not have a client path, but the parse records function called in FPerfroceGetFileListWorker::Execute (ParseRecordSetForState) ...
UMG property binding fixup for real numbers doesn't always work
UE - Editor - UI Systems - UMG - Apr 5, 2022For UMG delegates, we currently have a fixup pass that ensures that bound functions match the signature of the native delegate. However, the fixup appears to use the wrong function name, which cause ...
Duplicated blueprints cannot access casted class nodes
UE - Gameplay - Blueprint - Jun 15, 2015Duplicating blueprints that have 'cast to' nodes included in them display errors such as: "Could not find a function named 'AdjustShield' in 'worker_c'. Make sure 'worker_c' has been compiled for." ...
Default lux setting for ArchVis template causing render issue for 3d Widget blueprints and Materials set as "Unlit"
UE - Graphics Features - Jan 20, 2020The ArchVis template's default lux setting for the scenes directional light causes improper rendering on newly created materials and 3D widgets set to Unlit. Project attached with material made, s ...
Material compiler incorrectly generates error
UE - Graphics Features - Oct 30, 2017Under certain conditions, the material compiler appears to detect errors where there are none. I debugged the particular case of the RGBtoHSV material function with JonathanL, and we believe that th ...
Superfluous Scroll Bar in Unreal Project Browser
Tools - May 26, 2016Resizing the Unreal Project Browser so all projects do not fit in the preview plane results in a second, "inner" scroll bar that does not function as a scroll bar. Instead, attempting to scroll wi ...
Post Process Ambient Cubemap Tilted
UE - Graphics Features - Nov 11, 2014User imported a custom image in the correct format to be used as an Ambient Cubemap within the Post Process Volume. Enabled detailed lighting mode by pressing Al+5 and the image has been tilted/of ...
Exposure Bias in Post Processing is blown out for Samsung Note 5
UE - Platform - Mobile - Apr 6, 2016The post process within the project is causing the light to show up extremely bright on Note 5. This project has been tested on a Nexus 5, Samsung Galaxy S6, and Nexus 5X. Could not repro on: 6713 ...