Unreal Engine Issues

Crash When Toggling Visibility of Level with Planar Reflection

This crash occurs in 4.19 and 4.20 but not 4.18. Repro'd in 4.19.0-3944462 and 4.20.0-3955769 and 3964322. This is a regression. Per UDN licensee: When I'm showing/hiding levels in editor (in le ...

Navmesh generation doesn't work with Retopologize tool

When a Landscape is edited with the Retopologize tool, Dynamic Navmesh is no longer generated. This was also tested with Static Navmesh and yielded the same results. ...

When changing a variable of a component in an attached Actor, the variable becomes read-only

Changing a variable of a component with an instance of BP derived from StaticMeshActor or SkeletalMeshActor attached to another actor will cause that variable to be read-only. It did not reproduce w ...

CreateProxyObjectForPlayMontage does not report if cannot play

UPlayMontageCallbackProxy::CreateProxyObjectForPlayMontage creates a proxy object and immediately calls PlayMontage. If the montage fails to play (no mesh component, no animinstance, Montage_Play it ...

Niagara Ribbons using Two Sided materials are incorrectly lit

Two Sided materials are lit incorrectly on Niagara ribbons. The sides will be flipped of how they should be. ...

Incorrect Manual Focus Distance from eye dropper

The Debug Focus Plane in the CineCameraActor does not appropriately respond to mouse input and position when the Manual Focus Distance is set using the eye-dropper. Tested in 4.21.2 (CL - 4753647), ...

Action Rpg Sample Creating a new GameplayCue handler crashes the editor in 4.24

In Action Rpg sample, creating a new Blueprint of type GameplayCueNotifyActor or GameplayCueNotifyStatic, results in an Engine crash. The call stack leads to a PrintF Slate warning message that woul ...

Streaming a Widget Class with Remote UMG displays the NO SIGNAL slate on remote devices

Crash When You Add Get Landscape Material Node

After staring a new, blank project, and adding a generic blueprint actor, the editor crashes after you add a "Get Landscape Material" Proxy to the event graph within the blueprint. ...

Each adding a static mesh not containing any collision data keeps increasing PhysX memory

If the static mesh has UseSimpleCollisionAsComplex and does not have any SimpleCollision shapes, The physics actor will be destroyed immediately in FInitBodiesHelperBase::CreateShapesAndActors, but ...