Unreal Engine Issues
Unreal Engine Issues
If a file has been opened in the editor, it cannot then be unshelved by perforce until the editor is restarted
UE - Editor - Workflow Systems - Jul 8, 2022When the Editor launches it does not have a file lock on assets that are not open. When the asset is opened for editing, UE gets a lock on the file and this lock persists even after the tab is close ...
ObjectScale node in the material editor does not work with decals
UE - Graphics Features - Aug 19, 2020The ObjectScale node does not output the correct values in the material editor. This method works to tile images with a Surface Material Domain on a basic plane, but does not work when using it with ...
Edit Layers naming is being added to the Localization Dashboard
UE - Rendering Architecture - Materials - Mar 1, 2024When a Material Instance with Layer Parameters is added to the Level Landscape, the Layer Names get added to the Localization Dashboard. ...
Incorrect display of NavLinks when bFailedNavLinks is enabled
UE - AI - Navigation - Oct 10, 2024When bFailedNavLinkNavLink is enabled in RecastNavmesh, some NavLink points are debugged and others are not depending on the position of the NavLink point. In the sample project, enable bFailedNavL ...
Undo and ConstructionScript break the AttachChildren array
UE - Gameplay - Components - Nov 14, 2019Undo fills AttachChildren array with null by the undo serializer. After that, a construction script tries to remove child components from parent component's AttachChildren but it can't find its poi ...
Infinite loop in UAnimSequence::ExtractRootMotion when sampling backwards
UE - Anim - Gameplay - Dec 6, 2021When sampling root motion backwards we can hit an infinite loop in ExtractRootMotion. This happens if the initial sample time + negative delta is off the end of the animation clip. In that case FA ...
Atmosphere Sunlight shafts, artifacts, for both cascaded and virtual shadow maps.
UE - Rendering Architecture - Feb 5, 2024Very large objects casting dynamic shadows on the sky atmosphere can lead to flickering (cascaded shadow maps) or square patterns (virtual shadow maps). ...
Params in material instance disappear when grouping is changed in material with a material layer
UE - Rendering Architecture - Materials - Jan 11, 2025If there is a texture parameter within a specific material attribute stream in the base material and also within the base material layer, they must have the same parameter group otherwise the parame ...
In UE 5.5, "Open Level By Name" is not able to find the map if the map is not added to "List of maps to include in a packaged build"
UE - Framework - Feb 13, 2025The "Open Level By Name" is not able to find the map to travel when the map is not included in the "List of maps to include in a packaged build" option. This issue was not happening in UE 5.3 and UE ...
Crash when changing parent of Material Instance with Layered Materials and viewing Layer Parameters
UE - Rendering Architecture - Materials - Aug 1, 2025Reparenting a MaterialInstance that uses Material Layers to another instance with a different layer configuration can cause the editor to crash when opening the Layer Parameters tab. This appears to ...