Unreal Engine Issues

Adding a level instance to the persistent level puts its navmesh in the wrong place

Physics Constraint Actor: When plasticity is enabled, Drive Position Target is reset to zero on constraint initialization

When a Chaos joint constraint is first created, having linear/angular plasticity enabled will unexpectedly force its linear/angular drive position target to zero on initialization, disregarding the ...

World Condition FWorldConditionQuerySharedDefinition fails to Link in builds in Unreal Engine 5.7

In FWorldConditionQuerySharedDefinition::PostSerialize, if (Ar.IsLoading() && SerializedObject != nullptr) the SerializedObject is currently only used for debug logging within Link() and is not ...

Landscape overdraw bug

When 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 ...

Crash when adding Actor Components to a Spawnable Actor in Sequencer while it is despawned

After 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 ...

Enhanced Input: RebuildControlMappings loses information about the last state of a trigger

When two input actions are bound to the same "pressed" key in the same IMC & one is set to RebuildControlMappings, the input of the other will trigger indefinitely while the key is held down. ...

Unstable automation tests in "Standard Tests" list.

The two following automation tests found in the "Standard Tests" list hit exceptions & cause the editor to crash:System->Physics->Interface->BodyInstanceShaders->ShaderPreprocessor->BuiltInMacros ...

anim notify states are triggered when updating thumbnails

The issue is that FAnimationSequenceThumbnailScene::SetAnimation calls referesh bone transforms which will trigger notify states present at the midpoint of the animation (as the thumbnail code sets ...

OCIO + nDisplay not producing expected output in Disguise

Based on [Link Removed] OCIO + nDisplay not producing expected output The issue is just that when using UE 5.6 or later the resulting colour looks off compared to what 5.5 and pevious versions wou ...

Cloth - Assertion failed: SimData->LODIndex != INDEX_NONE && SimData->LODIndex <= LOD when using the rewind debugger with multiple LODs cloth

The LOD switching when the simulation is paused could still be causing problems when the simulation is paused while the LOD indexes are going up because there is no LOD Bias mappings by default. Se ...