Unreal Engine Issues

External Actors can hold stale references to Blueprint classes as edited instance properties

When a component is removed from a class that exists as an instance with external actors enabled, a deleted BP component on an actor will remain referenced by the instance. Disabling External Actor ...

Skeletal Mesh Customizable Object Node does not warn of changes to mesh sections.

When reimporting meshes with changes to their material sections, specifically additions, there is no indication that there will be an issue on output of a generated mesh. Ideally, we can watch for a ...

External objects added through customization have incorrect behaviour with EditConditionHides

Copy-paste the TestCode.h and TestCode.cpp into a module Activate the customization in the StartupModule() function ``` FPropertyEditorModule& PropertyModule = FModuleManager::LoadModuleChecked<FPro ...

Safezones on Android not set properly when orientation changes

Looks like the resize that does the safe zone update is done before the orientation is updated.  I suggested swapping the order to licensee in the UDN ticket and it worked for him.  This should be t ...

Null Material Layers in Material Instances cause Opacity Mask and WPO to break on Nanite Meshes

When a Material Instance is loaded that has a nullptr layer in StaticParametrs.Materiallayers.  The Material Instance will create it's own CachedExpressionData but the ConnectedParameterMask will be ...

Additive Niagara Sprites are rendered with offset in right eye

Static/stationary child actor components are invisible and/or move position when placed inside a dynamically loaded level

When loading a non-world partitioned level into a persistent world partitioned level, parent actors with child actor components within the loaded map will move position or become invisible. Within t ...

Reduce the overhead of World Partition cells UObjects on GC

Users with large numbers of UObjects (500k+) that are using World Partition want to enable GC actor clustering to handle streaming levels but no performance gains are realized when enabling GC clust ...

Users are unable to create projects when the default project location is a networked drive

There have been multiple reports of this issue, particularly from schools, over the last 10 years:https://forums.unrealengine.com/t/invaild-folder-path-with-network-user-drives/283475https://forums. ...

Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components

When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...