Unreal Engine Issues

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)

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% ...

In editor, custom primitive data dont work on instance static meshes in bp instance

Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...

Reliable subobject creation bunch may overwrite previously received property on the actor

This seems to occur because of how reliability and the retransmission of dropped data is handled in the engine. If a reliable bunch is dropped, the entire bunch will be resent, but any unreliable bu ...

Join in progress clients won't receive that a net startup actor is hidden

This seems to be because IsNetRelevantFor checks if the actor is hidden, resulting in a hidden actor not being considered relevant to clients. However, if it is a net startup actor, this will result ...

AssetRegistry has poor performance when a large map is resaved

A licensee reports that their large map has a 10s cost in the AssetRegistry when resaved. They took a profile and found the cost is mostly in LoadCalculatedDependencies for the map, and most of that ...

No warning for deleting an actor when its referencers are unloaded

Normally a warning appears to confirm references to an actor will be deleted. If the references are unloaded then no warning will appear. ...

CommonUI Analog Cursor + Enhanced Input triggers cause Gamepad Face Button Bottom triggers to get stuck when alt-tabbing

Reproduction rate: 5/5 Regression check: No, this also occurs in 5.4.2. Please note that this issue only reproduces with the Gamepad Face Button Bottom and does not occur for any other gamepad butt ...