Removing a parameter from a blueprint function in a library can cause actor classes calling it to lose their parent or instance data

Gameplay - Blueprint - Oct 4, 2018

Compile errors caused by an actor calling a function with something hooked up to a removed parameter can cause that actor to lose it's place in the hierarchy. Typically, the actor will be fixed once ...

Unable to package with nativized functions that have a delegate-type input variable

Gameplay - Blueprint - Oct 2, 2018

Attempting to package a project that has nativization enabled for a function that takes a delegate-type variable as an input results in failure. Regression?: No This occurred in 4.19 ...

UK2Node_EnumLiteral always outputs defaulted (0) value if input pin is connected

Gameplay - Blueprint - Sep 28, 2018

The reported behavior repros in 4.20 and 4.21, but does not repro in 4.19. Regarding the "Literal Enum" node in blueprints: When an input enum value is connected to the input pin, the output is al ...

Ensure triggers when undoing change to newly created variable

Gameplay - Blueprint - Sep 28, 2018

Ensure will trigger when undo reverts text to default value. "This triggers an ensure because the undo ends up calling SKismetInspector::ShowDetailsForObjects(), which forces the keyboard focus to ...

[CrashReport] UE4Editor_Engine!UEdGraphPin::SerializePinArray() [edgraphpin.cpp:1808]

Gameplay - Blueprint - Sep 26, 2018

User comment in crash group:I was try to copy the AI MOVE TO(from pawn sensing) node inside a function, i couldnt copy it because it said conflicting node substituted during paste;, so i tried to cu ...

Replication node decorator does not appear on Timelines that are set to replicate

Gameplay - Blueprint - Sep 26, 2018

A licensee has reported that Timeline nodes that are set to replicate do not have the replicated node decorator added, which would be seen on other nodes and variables that are replicated. Please re ...

Use of BP node "Fill Data Table form CSV File" causes silent crash

Gameplay - Blueprint - Sep 20, 2018

Using the Fill Data Table form CSV File node causes a crash when in a packaged project. ...

InstanceOnly properties are written to a Blueprint

Gameplay - Blueprint - Sep 17, 2018

When CopyActorProperties is used with a target being a template such as a blueprint, it can copy and serialize EditInstanceOnly Properties. ...

Large UMG Blueprint widget trees can lead to very long compile times when packaging with Blueprint nativization enabled.

Gameplay - Blueprint - Sep 10, 2018

Licensee reports very long C++ compile times during packaging after nativizing a UMG Blueprint asset containing a very large and heavily-nested widget animation hierarchy. The support thread outlin ...

BP new Event Dispatcher cannot be deleted after modification

Gameplay - Blueprint - Sep 10, 2018

Changing the variable type of an Event Dispatcher in the Blueprint editor results in an impossible to compile situation. The BP must be then recreated due to being unable to remove the unattached ev ...