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 ...
Lighting channels not working as expected when enabling Ray Tracing Shadow
UE - Graphics Features - Lumen - Oct 13, 2020Non-Ray Tracing Shadows are only cast from lights on meshes assigned to the same Lighting Channel. When enabling Ray Tracing Shadows this is not the case. Lights will still cast Ray Tracing Shadows ...
Integrity of AnimSyncMarkers compromised while playing AnimMontage with root motion in server side
UE - Anim - Gameplay - Jan 11, 2023Reference UDN as it explains well the cause of the issue. ...
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 ...
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 ...
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 ...
Get bounds node for the Steam VR Component Does not appear to return the actual bounds
UE - Platform - XR - Apr 11, 2016[NickW] This needs to pull the Play Bounds from Vive. The old soft / hard bounds system appears to be partially deprecated The Get bounds node does not appear to return the correct in game chaper ...
Inclusive Nativized Blueprints slower than Non Nativized Blueprints in packaged project
UE - Gameplay - Jul 1, 2019When nativizing blueprints the packaged build of the project runs slower than a non-nativized version of the packaged project. Found in 4.22 CL#7053642 Reproduced in 4.21 CL#4753647, 4.24Main CL#7 ...
When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.
UE - Editor - Workflow Systems - Mar 12, 2024If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...