Unreal Engine Issues

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. ...

UAssetDefinition doesn't allow overriding actions from base classes

In the new implementation UAssetDefinition to define the actions for asset we found that it isn't possible to delete or hide actions from parent classes due to the ToolMenu system works with delegat ...

Dynamic (transient) material instance assignment lost if object spawnable

Material Instance Dynamic assigned to Spawnable objects with Editor Utility Widget get reverted when hit the Save button in Sequencer. This appears to come from the Material Instance Dynamic not be ...

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 ...

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. ...

Displaying Revision control history for a file ending in an "undo" of a revision can cause a crash

This crash is caused by how source control history is managed and shown. In this specific case the source control software is Perforce. As written in the repro steps, it can happen to any uasset tha ...