Unreal Engine Issues
Unreal Engine Issues
Crash on Mac for some 4.16 users while opening editor, related to Xcode
UE - Graphics Features - May 26, 2017This is a common crash on Mac in the 4.16 release. The callstack is fairly generic , so it shares similarities with other Jiras such as [Link Removed] and [Link Removed], but this issue is differen ...
FMath::Eval ignores groupings while solving
UE - Foundation - Nov 8, 2022This is not a regression. Tested in //UE5/Release-5.0 CL20979098 FMath::Eval ignores groupings while solving problems. This has caused some confusion with users who are expecting the groupings to b ...
Material Layers Ignore Virtual Texture Sampler Restrictions
UE - Rendering - Architecture - Mar 25, 2024Virtual Textures can be assigned to Texture Sample Parameters that are not configured for Virtual Textures, if that parameter is inside of a Material Layer. Also found in Release-5.4, CL 32426910 ...
Translucency area has stripe-style issue on TSR
UE - Graphics Features - Mar 28, 2024The TSR History Rejection buffer develops a grid-like artifact over translucent, camera-facingplanes. This problem can be mitigated by increasing r.TSR.ShadingRejection.TileOverscan from 3 to 4 with ...
Object Load order issue in Blueprint Editor
UE - Gameplay - Blueprint Editor - Oct 21, 2024[Image Removed] change FindObject to StaticLoadObject might fix this issue ...
Duplicating SkeletalMesh in packaged game causes crash
UE - Rendering - Graphics Features - Nanite - Mar 11, 2025This code worked until UE5.4. NaniteResource added in 5.5 causes this issue. ...
When a Niagara User Parameter is renamed, mesh bindings on Niagara Mesh Renderers are not updated, and the binding is silently broken
UE - Niagara - Mar 13, 2025In Niagara, Mesh Renderers expose a "Meshes" array for selecting the meshes to be rendered. On each array entry, a property "Mesh Parameter Binding" is available and allows the user to override that ...
Find in Blueprints: Default values of TMap keys are not returned
UE - Framework - Blueprint Editor - Sep 3, 2025Context Find-in-Blueprints can be used to search the current, or all, blueprints. If you enter a simple string, it would return nodes, pins, pin default values and default values for BP Variables ( ...
Child actor component mesh actor does not update transform with child actor component in parent blueprint
UE - Gameplay - Oct 22, 2015if a child actor component is set to a new child actor at runtime, the actor will not update with the transform of the child actor component in the parent blueprint. ...
Editor Preferences 'Enable Sound' option causes Real Time Audio to Stop Working after PIE
UE - Audio - Sep 28, 2016Real Time Audio stops playing sounds after exiting PIE with the 'Enable Sound' option disabled. The tooltip states, "Whether to play sounds while in a Play in Editor session." This setting does no ...