Unreal Engine Issues

Spawned Actors do not appear in World Outliner

Spawning actors from a Blueprint via the SpawnActorFromClass function at runtime does not cause the World Outliner to update. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 64 ...

Grouped meshes appear to rotate when used in streaming levels

Grouped meshes appear to rotate when used in streaming levels. If the parent of the group has a rotation, it appears to pass this on to the rest of the group after the meshes are streamed in. As a n ...

Crash: Nativized AnimBP instances can assert on load in a cooked build with async loading enabled.

This is a regression that was introduced alongside a memory optimization for Animation Blueprint assets. Suggested workarounds:Disable "Async Loading Thread Enabled" ORDisable Blueprint nativizati ...

Unable to summon the virtual keyboard on Android 9.0 with TargetSDKVersion=28

SetPhysMaterialOverride does not work properly when using Weld Simulated Bodies enabled AttachToComponent func

When using Weld Simulated Bodies enabled AttachToComponent func, the child Primitive Component's BodyIstance ActorHandle is released. As a result, in BodyInstance.cpp, the judgment of FPhysicsComman ...

Flipbook rendering distortion when adding local offset to Capsule Component.

Adding local offset to Paper Flipbook in UE.4.22 results in rendering distortion. ...

Dropping a packet containing an initial replication for a Custom Delta Property breaks replication

Custom Delta Property NAK handling is done via Custom Delta Base States. Whenever we replicate a CDP, we have the implementing code return a Custom Delta Base State. However, before a CDP is ever re ...

Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly

At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...

Fill Data Table from CSV File crashes editor if the data table is open

Attempting to use the Fill Data Table from CSV File node will result in a crash if the CSV file is open when running. ...

Trigger Montage Ended Event results in Unhanded Exception

TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround:   Add a Delay node befo ...