Unreal Engine Issues

Auto Exposure Compensation Curve issue when switching from Histogram to Manual

When switching the Camera's Exposure Metering Mode from Histogram to Manual, there is a single-frame flash. The Licensee has a proposed code change that would fix this issue. Also found in 5.4, CL 3 ...

Copied Actors in World Partition Levels Maintain References to Actors They Are Copied From

When an Actor is duplicated in the editor inside a world partition level it maintains references to the Actor it is a copy of. This can cascade, i.e. Actor C, which is a copy of Actor B which is a c ...

MustBeMappedGUID errors after several seamless travels

This seems to be the same issue as was reported in [Link Removed], as enabling net.ResetAckStatePostSeamlessTravel resolves the issue. However, it was recently reported that disabling net.FilterGuid ...

UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future

A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...

Components added in Blueprint that want initialisation are not maintained by RerunConstructionScripts

When a native component that wants initialisation is added to a Blueprint actor in the Blueprint editor, the initialisation state of this component will not be correctly preserved by RerunConstructi ...

IK Rig/Retargeter editors' Preview viewport doesn't display static mesh attachments

Many of the animation asset editors don't display static mesh attachments in the way that the anim sequence or anim bp editor do.  This prevents users from previewing characters that are built from ...

Deformer Graph editor Preview viewport doesn't display static mesh attachments

Many of the animation asset editors don't display static mesh attachments in the way that the anim sequence or anim bp editor do.  This prevents users from previewing characters that are built from ...

Motion Matching Database editor Preview viewport doesn't display static mesh attachments

Many of the animation asset editors don't display static mesh attachments in the way that the anim sequence or anim bp editor do.  This prevents users from previewing characters that are built from ...

Foliage Instanced Actor Created Outside Level Instance when moving Base

Node errors that block compilation aren't output in compiler results log

Errors from EdGraph nodes aren't being piped into the compiler results log.  This can make it difficult to track down what's broken in larger rigs. ...