Unreal Engine Issues
Unreal Engine Issues
Engine crashes when renaming assets inside an L10N folder.
UE - Editor - UI Systems - Localization - Mar 3, 2026The engine crashes when renaming a localizable asset inside an L10N folder. The engine attempts to associate it with the original localizable asset, but it is unable to find it and ends up accessing ...
RecastNavmesh contents are non-deterministic across navmesh builds
UE - AI - Navigation - Mar 2, 2026Per-tile data such as TileIndex and salt are stored non-deterministically. ...
World Condition FWorldConditionQuerySharedDefinition fails to Link in builds in Unreal Engine 5.7
UE - AI - Mar 1, 2026In FWorldConditionQuerySharedDefinition::PostSerialize, if (Ar.IsLoading() && SerializedObject != nullptr) the SerializedObject is currently only used for debug logging within Link() and is not ...
Parent Socket property is not set from k2_attach_to
UE - Framework - Components - Feb 26, 2026To speed up our process of creating control rig assets we are working on a Python script to automate this process. We have an issue when we try to attach a static mesh component to a socket of a ske ...
Clear coat bottom normal does not seem to work properly with virtual textures
UE - Rendering - Graphics Features - Feb 26, 2026Clear coat bottom normal does not seem to work properly with virtual textures. Different virtual textures plugged into the material's base color can yield different clearcoat bottom normal results. ...
Landscape overdraw bug
UE - Graphics Tools - Terrain - Feb 26, 2026When Landscape GPU Culling is operational, patches of Landscape will have heavy overdraw. This requires Nanite and Lumen to be disabled - the test project is set up with this by default. This quad ...
STAT_StaticMeshTotalMemory increases after repeated loading and unloading of a level containing Nanite static meshes
UE - Rendering - Graphics Features - Nanite - Feb 26, 2026The issue appears to be caused by a mismatch in the value returned by GetResourceSizeBytes(EResourceSizeMode::Exclusive) between InitResources() and ReleaseResources(). At InitResources(), the repo ...
Nanite displacement issue when using along non-uniform scaling
UE - Rendering - Graphics Features - Nanite - Feb 26, 2026Nanite Tessellation displacement direction is incorrect for landscapes with non-uniform scales. It seems to use the normal from the unscaled landscape, which can result in the displacement causing t ...
InvariantLeft and InvariantRight justification mispositions wrapped multi-line text
UE - Editor - UI Systems - Feb 26, 2026When a UMG Text widget is set to Auto Wrap and uses InvariantLeft or InvariantRight, the wrapped visual lines are positioned differently than expected compared to Left/Right. In the current engine ...
Crash when adding Actor Components to a Spawnable Actor in Sequencer while it is despawned
UE - Anim - Sequencer - Feb 26, 2026After migrating our project from UE 5.5 to 5.7, we are experiencing a consistent engine crash in the Sequencer. The crash occurs specifically when a user attempts to add a component to a Spawnable A ...