Unreal Engine Issues

HISM causing massive spikes in BuildTreeAsync

Loading a world partition cell containing dense foliage (30k+ instances per cell) causes spikes on lower end hardware of up to 10-15ms and can observe spikes of 2-5ms on high end hardware too primar ...

Enum Compare Condition causes crash when resetting default value of right field in State Tree's Enter Conditions

In FStateTreeCompareEnumCondition::GetDescription, the Left.Enum value is mistakingly used when setting the RightValue. This causes crashes when resetting the default value of the Right field in an ...

[AI] Navmesh tiles are fully removed when a tile containing an automatic navlink is regenerated using Dynamic Modifiers Only generation

An unusual interaction has been found when using automatic navlink generation combined with Dynamic Modifiers Only navmesh generation. When an nav area is modified in a tile that contains an automat ...

MRG - Additional Post Process Render have a black alpha channel

Additional Post Process renders always have a black alpha channel ...

Chaos Cloth - Multiple issues with convex colliders

Issue 1: Convex Collision Transformation Missing for External Collision Sources Issue 2: Convex CCD Stability Issues due to Plane Intersection Semantics See attached URL for more details. ...

Object Columns using soft asset references will return null results

We have encounter an issue in the Chooser when we setup output object column for soft reference object ptr (an optional montage object). It is working correctly when the montage is loaded. But befor ...

Adding weights to bones doesn't properly update skeltree

Rounding of conversion of anim length into frames add an empty frame to the animation

cf. https://forums.unrealengine.com/t/gltf-import-bug-animations-have-an-entire-extra-frame-when-source-animation-is-slighly-above-target-length/2697309 The GLTF importer adds an extra frame to the ...

"Could not find static actor" errors on standalone editor client when connecting to PIE server

This seems to be due to how FObjectReferenceCache and UEngineReplicationBridge handle remapping object paths for PIE. When creating the object reference handle, the object’s path should get renamed ...

Mover | FStanceModifier adjustment teleport on Crouch/Uncrouch can fail when child components intersect world

Context When crouching and uncrouching with Mover’s DefaultMovementSet, the pawn capsule’s half height is changed. This behavior mimics the CharacterMovementComponent. To ensure the pawn’s feet sta ...