Unreal Engine Issues
Unreal Engine Issues
Compilation manager inhibit construction script to get other actor reference on the level when running construction script right after actor compile.
UE - Gameplay - Blueprint - Aug 9, 2017Construction script execution following blueprint compile gets invalid actor reference if Blueprint compilation manager is enabled. For example, in the attached project, Right after blueprint compi ...
OnHit not firing when capsule collider passes onto very close and same height mesh
UE - Simulation - Physics - Sep 10, 2019When a capsule collider passes from the top of one piece of geometry to another that is very close the OnHit event doesn't fire. I have attached a project that demonstrates the issue in 4.23. A vid ...
Swapping the Child Actor Class of a ChildActorComponent back to a previously selected BP leads to an Editor crash from illegal Renaming
UE - Framework - Components - Sep 11, 2024A fatal error occurs if we change a Child Actor Class from one BP (ex. "BP_A") to a different BP ( ex. "BP_B") and later change it back to the first BP (ex. "BP_A") without compiling the BP between ...
Plugin OculusAudio module could not be found when packaged through UFE in binary
UE - Foundation - Cpp Tools - Plugin System - Jun 3, 2015This issue also occurs This is the same error as in [Link Removed]. Discovered by a user on AnswerHub, I was able to reproduce this error in today's 4.8 branch, CL 2575437 Attached to his thread ...
Editor gets stuck "Updating file(s) source control status" when importing multiple FBX files with Git source control
If a user attempts to import multiple FBX files into a project that is set up with Git source control, the message "Updating file(s) source control status..." will appear and stay on the surface ind ...
Can't set "r.Shaders.Optimize" to false in UE5.4
UE - Rendering - Architecture - Shaders - Jun 7, 2024The CVar "r.Shaders.Optimize" cannot be set to false from DefaultEngine.ini in the section "[ShaderCompiler]" as its help text describes. Also tested on UE5-Main, CL: 34200103 ...
Some texture files cannot be exported from the editor
Tools - Feb 4, 2015There are instances where some texture files cannot be exported from the editor. In this older post a user had reported this with the file T_Sky_Blue from the engine folder. Only this file has been ...
Lack of multi-bounce when using software traced lumen radiosity
UE - Rendering - Features - Lumen - Apr 4, 2025Certain Lumen Hardware Ray Tracing CVars, when disabled in isolation, will not fall back to tracing the Global Distance Field, because the Global Distance Field is still disabled. The function "Lum ...
Setting linear dampening during runtime via the event graph does not work for separated chunks
UE - Simulation - Physics - Destruction - Dec 18, 2014DESCRIPTION: When using a DM in blueprints and setting the linear dampening in the event graph the DM will honor the linear dampening but the chunks as they break off will not. Setting the mesh to ...
[MetaSounds] - Sound Waves used in composition cut out after GC in packaged game if the reference graph uses a literal input
UE - Audio - MetaSounds - Mar 18, 2022When a Sound Wave is set on a referenced node, and that node is used in composition, the Sound Wave will cut out after some time. This does not occur if the reference node uses an Input node for the ...