Opening / Compiling class with ChildActorComponent causes the ChildActor package to be marked dirty.

UE - Gameplay - Components - Mar 24, 2017

Looks like this is a problem where the Actor is Duplicated due to constructions scripts running. Later, when the duplicate is destroyed all of its components will call RemoveOwnedComponent as they'r ...

GUID property is not fully generated for a component added to a Blueprint in the Editor

UE - Gameplay - Blueprint - May 1, 2017

If a component contains a GUID property, and that component is added to a Blueprint in the Editor, that property is not fully generated for instances of the Blueprint. Only the first part of the GUI ...

Inconsistency when dragging a sequence into a Master Sequence

UE - Anim - Sequencer - May 31, 2017

Inconsistency when dragging a sequence into a Master Sequence ...

Memory leak in Sequencer graph editor with a lot of keys

UE - Anim - Sequencer - Jun 5, 2017

Memory leak in Sequencer graph editor with a lot of keys ...

[CrashReport] Assertion failure in UE4Game!FMetalComputeShader::FMetalComputeShader()

UE - Graphics Features - Jun 29, 2017

This is a common Mac crash in 4.16. Users have not provided descriptions, so additional information is not currently available. Callstack from LogLogMetal:Display: No .metalmap file found for SF_M ...

Server crashes when client connects after Server has reloaded a sublevel with a deleted actor

UE - Networking - Jul 13, 2017

UNetDriver::DestroyedStartupOrDormantActors maintains a list of deleted startup (and dormant) actors. This is used to notify clients that have joined the server of Actors that need to be destroyed ...

Copying a blueprint instance will reset array values if new element has been added

UE - Gameplay - Jul 17, 2017

Copying a blueprint instance will reset array values if new element has been added. Repro project is using a variable type of Static Mesh but this also happens with other variable types as well. Us ...

Changing a function parameter type of a Split Struct isn't reflected in the editor

UE - Gameplay - Jul 17, 2017

Changing a function parameter type of a Split Struct isn't reflected in the editor. When the variable type is changed, the split struct will remain. This also effects generic variables. User Desc ...

Post Process AnimBP is no longer initialized in Persona Viewport

OLD - Anim - Jul 20, 2017

Post Process AnimBPs used to be processed in the persona viewport. This could have been intentional. Occurs on? 4.14 - 3249277 - NO 4.15 - 3450819 - YES 4.16 - 3466753 - YES 4.17 - 3545186 - YES ...

Nativized builds will crash on launch if a non-nativized Blueprint references a User-Defined Enum property in a nativized Blueprint.

UE - Gameplay - Blueprint - Jul 20, 2017

EDL-related crash occurs on launch of exclusively-nativized build where a non-nativized BP references a User-Defined Enum property in a nativized BP. Related to [Link Removed], but this is a parall ...