Unreal Engine Issues

Geometry Collections don't support any collision visualization modes (Collision, CollisionVisibility or CollisionPawn)

Geometry collection objects do not display any collision visualization, either collision color or wireframe overlay when the view mode is set to Player Collision or Collision Visibility or when the ...

USkeletalMeshComponent::SkeletalMeshAsset modified value is lost when changing via level details panel

USkeletalMeshComponent::SkeletalMeshAsset is transient so it seems that any modified value that is set via the level details panel on an existing actor is lost.  We deal with this same problem for o ...

HLODs generate incorrectly with Substrate enabled

Happens when using multiple layers:"Testing this further it appears that it only occurs with multiple HLOD layers. The default setup has an instanced HLOD with a merged mesh HLOD parent. If you remo ...

Cloth Asset - Cloth bounces off wildly during the rendering of a sequence in MRQ.

The motion blur rendering is causing some issues when rendering the cloth asset as the timestep wildly changes without the number of substeps being increased, The movie pipeline code needs to man ...

pose search cook determinism issue

In class UCancellableAsyncAction, methods IsRegistered() and ShouldBroadcastDelegates() still return true after Cancel() or SetReadyToDestroy() unregisters the object.

Class UBlueprintAsyncActionBase provides methods RegisterWithGameInstance() and SetReadyToDestroy(), which respectively register and unregister the object with the game instance. Derived class UCanc ...

Actors are removed from data layers after Play and Eject (F8) and using Save Changes (shortcut K)

Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)

Shader Template files like MaterialTemplate.ush do not submit previous chunks when encountering a `%` character, unless that `%` character is `%s` or `% {...} `. Because the error is happening ...

Level Instance Editor Paths not resolving correctly

Soft refs to actors within level instances are not working for:Level Script.BP assets dynamically spawned at runtime.Placed BPs may also have their soft ref broken (maybe this issue is more-so relat ...

can not load all actors when load level with ULevel::LoadAllExternalObjectsTag

the udn link:https://udn.unrealengine.com/s/question/0D5QP00000OxDLH0A3/%E9%80%9A%E8%BF%87%E4%BB%A3%E7%A0%81%E6%88%96%E8%80%85%E8%93%9D%E5%9B%BE%E8%8A%82%E7%82%B9%E5%A4%8D%E5%88%B6%E5%85%B3%E5%8D% ...