Unreal Engine Issues
Unreal Engine Issues
Navmesh seems to have buggy behavior when interacting with HISMCs that programmatically set mesh via SetStaticMesh.
UE - AI - Mar 6, 2020Both versions works correctly if HISMC is pre-placed (generated in ConstructionScript). Only when generated dynamically does it fails. The Navmesh isn't being updated after SetStaticMesh and AddInst ...
C# UHT fails to recognize delegates declared in another class's namespace
UE - Core - Cpp Tools - UnrealHeaderTool - Dec 14, 2022Repro Rate: 3/3 This issue occurs in the live build //UE5/Release-5.1 at CL 23058290. This issue has also been regression tested against //UE5/Release-5.0 at CL 20979098 and is confirmed to be a r ...
WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined property (bSimulatePhysics), throws an error
UE - Framework - Apr 15, 2025WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined class property (bSimulatePhysics), throws an error in the logs: LogEditCondition: Error: EditCondition pa ...
Cloth Simulation Doesn't Work When Clothing Data Is Applied Before Being Painted
UE - Simulation - Physics - Character - Jan 17, 2020When clothing data is applied before painting the influence on the section the cloth doesn't simulate. I tested this using the Paragion: Twinblast actionhero skeletal mesh asset. Found in 4.24.1 C ...
Calling "GetCameraImage" rapidly ~10 times causes ARKit camera feed to stop updating
UE - Platform - XR - Nov 8, 2018If you call the "GetCameraImage" function rapidly ~10 times, it causes the ARKit camera feed to stop updating. Waiting for awhile or tapping some more seems to bring it back. Tested on macOS H ...
Using Fixed Frame Rate Increases the Speed of Auto Save
UE - Foundation - Core - Oct 26, 2015Using a lower fixed frame rate (i.e. 20fps) causes the auto save timer (when set to the default of 10) to count down in 3 seconds. Found in 4.10 Preview 2 CL 2733139. Reproduced in 4.9.2 binary an ...
Variable Names with a Leading Space Cannot be Copied
UE - Gameplay - Blueprint - Nov 9, 2015If you begin a variable name with a space, attempting to copy any instances of that blueprint will prompt an error warning: "Unknown property in <BlueprintName>: <VarName> = <Value>. Found in 4.9.2 ...
Importing multiple SpeedTree assets that use the same texture will not assign correctly
UE - Graphics Features - Sep 25, 2015When importing multiple SpeedTree assets that use the same material will cause one to import blank (black) materials and assigned. This happens when importing into the same folder, however, if impor ...
Apex Cloth disappears when Setting Custom Time Dilation to Zero
UE - Simulation - Physics - Character - Aug 24, 2016Apex Cloth assets disappear if you set the Custom Time Dilation to 0.0. You can workaround the issue by setting the Custom Time Dilation to 1.0, and then use the 'Force Cloth Next Update Teleport a ...
BP Component is not destructible if the Object Type is set during runtime
UE - Simulation - Physics - Destruction - Mar 16, 2015BP Component is not destructible if the Object Type is set during runtime. If the Object Type is set manually before PIE is started, the BP component will destroy correctly. ...