Unreal Engine Issues

FInterpCurve::InaccurateFindNearestOnSegment doesn't correctly find points on the section connecting last to first points in a closed loop

Child actor component mesh actor does not update transform with child actor component in parent blueprint

if a child actor component is set to a new child actor at runtime, the actor will not update with the transform of the child actor component in the parent blueprint. ...

BSPs do not update when converted to blocking volumes

If a bsp is converted to a blocking volume, the faces of the bsp remain present until a new actor is placed or geometry is compiled. ...

Replacing Selected Actors does not replace all references.

When using the "Replace Selected Actors with" feature in the editor, references to the replaced actor are not updated to reference the new actor (where valid). They will appear to be replaced until ...

There is a possible code mistake in UPrimitiveComponent::GetCollisionShape.

A user pointed out a possible mistake in the Engine source code. In the GetCollisionShape function in the UPrimitiveComponent class, an FVector variable Extent is created and set, and then potential ...

Interface functions inherited after a duplicated actor blueprint is reparented to the blueprint it was duplicated from cannot be deleted.

Interface functions inherited after a duplicated actor blueprint is re-parented to the blueprint it was duplicated from cannot be deleted. Note that the inherited function can be deleted in a new ac ...

ScrollBox: Add Inertial Scrolling (Touch)

Verify that inertial scrolling works in the ScrollBox and the ListView on touch devices. We have reports that it isn't working in 4.9, it may have been fixed since then, or not be as smooth as it c ...

Editor Crashes When a Component and Actor Implement Two Interfaces

The editor crashes if you implement two blueprint interfaces in an actor blueprint, and then an actor component blueprint. These interfaces must have at least one function that returns a value. The ...

Editor Crashes When Packaging for iOS

Crash Reporter: [Link Removed] In a code-based project, Editor crashes when packaging for iOS if GameModeBP or other BP is opened. REGRESSION? No ...

Duplicated Blueprint Causes Incorrect Target for Events

Duplicating a blueprint that has a node hooked up to BeginPlay causes the BeginPlay in the duplicate blueprint to target the original blueprint. This does not appear to affect functionality. Occur ...