Unreal Engine Issues
Unreal Engine Issues
Case Child Actor Component validation error when set as editor-only
UE - Framework - Components - Jun 4, 2024When a blueprint actor with a child actor component is placed in a level, and the child actor component is set as editor-only, the output log will show a validation error when the actor is moved and ...
Crash when exiting editor before EditorUtilityTask completes
UE - Editor - UI Systems - May 29, 2024If exiting the editor before the EditorUtilityTask completes, it crashes. It will not crash if canceling the UtilityTask and then exit the editor. The following implementation does not allow destruc ...
Water body constructor dirties actor
UE - Graphics Tools - Terrain - Water - May 29, 2024Modify gets called from AWaterBody constructor: WaterSplineMetadata->Reset(3); WaterSplineMetadata->AddPoint(0.0f); WaterSplineMetadata->AddPoint(1.0f); WaterSplineMetadata->AddPoint ...
UClass::SparseClassDataStruct null at editor-time for child blueprints until compile
UE - Framework - Blueprint - May 29, 2024Child blueprints of a blueprint of a native actor class with sparse data can have an incorrectly null SparseClassDataStruct value, and thus fail to initialzie their SparseClassData. This affects edi ...
Async Physics incorrectly interpolates when multiple physics ticks pass
UE - Simulation - Physics - Solver - May 28, 2024If a user set the transform of a Body from the game thread and physics is running multiple async ticks perf game tick, the transforms might be being calculated incorrectly. ...
Server will process moves from client with bReplicateMovement set to false
UE - Gameplay - Player Movement - May 28, 2024UCharacterMovementComponent::ReplicateMoveToServer checks IsReplicatingMovement before sending moves to the server, but the server does not check IsReplicatingMovement when processing these received ...
Spline points cannot be selected on newly placed spline blueprints
UE - Editor - Workflow Systems - May 28, 2024Licensee reports a difference in behaviour in instanced blueprints containing SplineComponents from 5.3 to 5.4, with respect to whether a placed blueprint containing spline component instance can be ...
Packed Level Actor should adjust transforms for negatively scaled actors when adding them to ISM
UE - World Creation - Worldbuilding Tools - Level Instances - May 24, 2024When negative scaling is applied to an instance of an ISM, the instance transform is updated to apply a rotation instead. The same thing should happen when packing actors into ISMs for Packed-Level ...
delete_all_material_expressions_in_function Doesn't delete all expressions in one go.
UE - Rendering Architecture - Materials - May 24, 2024UDN: https://udn.unrealengine.com/s/case/500QP000009NxNBYA0/deleteallmaterialexpressionsinfunction-doesnt-delete-all-expressions-in-one-go?fromCase=1 A UDN user is reporting that the delete_all_mat ...
CPF_TextExportTransient and RF_TextExportTransient inconsistent behavior
UE - Framework - Blueprint - May 23, 2024The TextExportTransient can be specified as a property flag and object flag. Behavior is inconsistent: there are many ways in which an object marked TextExportTransient can still be part of the text ...