Unreal Engine Issues
Unreal Engine Issues
Multicast RPC from PlayerController with RepGraph results in an invalid swap message
UE - Networking - Mar 4, 2021Since a player controller only exists on the server and on the owning client, calling a multicast from one isn't really a supported operation. However, this case is still handled cleanly when RepGra ...
"Base Pass Shader" stat results are missing or display incorrect information while using Vulkan
UE - Rendering Architecture - Shaders - Nov 15, 2021Base Pass Shader results are not showing, or showing up incorrectly when looking at the Stats results within the material editor of an Unreal Editor using Vulkan. Regression Tested: //UE4/Release-4 ...
Lumen generates gradated shading even if the light is a constant color sky light
UE - Graphics Features - Lumen - Jul 22, 2022Lumen generates a gradated shading even if objects are lit by a 360-degree constant sky light.[Link Removed][Link Removed] I looked into this and found that this comes from Spherical Harmonics int ...
OCIO: orthographic viewport perspectives disable color transform
UE - Virtual Production - Rendering - Color - Apr 6, 2023Switching through a non-perspective view disables the OCIO color transformation until perspective is re-selected. (There is also a related Slate-Editor issue where the visible viewport label doesn't ...
ContentBundleContainer does not load new bundles in PIE after level transition
UE - World Creation - Worldbuilding Tools - Nov 9, 2023I believe this issue stems from the ContentBundleContainer not populating the StreamingObjects of the UContentBundleDuplicateForPIEHelper. PIE in the same level as the bundles works as the editor h ...
[Attenuation][Spatialization] - If speaker output is set to stereo, the Surround 2D Non Spatialized Radius Mode doesn't generate any audio
UE - Audio - Dec 12, 2023If Surround 2D is set as the Non Spatialized Radius Mode, there is no fallback option if the user's output is not a surround format (eg stereo). There is also nothing communicated in the Tool Tip. ...
PCG Graph callback fails after compiling blueprint
UE - World Creation - Procedural Tools - Jul 9, 2024PCG graph callbacks in BP do not appear to get called correctly after the blueprint is compiled. ...
Point light leaking throught thin geometry
UE - Graphics Features - Oct 29, 2024In 4.27, ray traced point lights can leak through thin meshes. This bug does not exist in Unreal Engine 5, due to many of the potential rendering areas being fundamentally changed. ...
[Interchange][FBX] Issue with asset name clashes after auto import
UE - Editor - Content Pipeline - Import and Export - Jan 22, 2025The mesh changes and the asset name stays the same while the two FBX are completly different: different filename, different mesh names in the FBX CF video for repro steps. https://forums.unreale ...
RHIGetAvailableResolutions returns duplicate entries when bIgnoreRefreshRate is false
UE - Rendering Architecture - RHI - Sep 17, 2015When the RHIGetAvailableResolutions function fills the array that is passed in as the first argument, it will end up filling some slots with duplicate resolutions (including refresh rate) when the b ...