A bug in UBTService_BlueprintBase makes it impossible to create "deactivation-only" BP implemented BT services

UE - AI - Jan 22, 2016

A bug in UBTService_BlueprintBase makes it impossible to create "deactivation-only" BP implemented BT services. ...

Building the Engine using Visual Studio 2015 can fail if Windows Driver Kit is installed.

UE - Foundation - Cpp Tools - UnrealBuildTool - Oct 26, 2015

There is a possible logic bug in Visual Studio 2015's vcvarsqueryregistry.bat where it locates the include path for the Universal CRT by looking at the last folder in the specified location. This se ...

Expose 'WorldUp' direction for CableComponents

UE - Gameplay - Oct 13, 2015

When the Cable component is set to specific rotations it will no longer render the cable actor that is attached to a mesh. Image is attached with multiple setups. Workaround to get it to render: ...

Asset with child actor component (documentation actor) crashes upon level load

UE - Gameplay - Jan 18, 2016

Adding a child actor component of type Documentation Actor to a blueprint, then adding that blueprint to a level and saving will cause the editor to crash upon re-opening the map. CrashReporter: N ...

Opening a project that contains an actor in viewport with a child actor component of type TextRenderActor crashes the editor

UE - Gameplay - Blueprint - Jan 12, 2016

If a blueprint with a child actor component of type TextRenderActor is added to a level and the editor is saved, closed, and reopened, the project will crash with the following assert: Assertion ...

Editor crashes when exiting and having a widget blueprint open.

UE - Editor - UI Systems - Dec 22, 2015

This is a top crash occurring in the 4.11 Preview Editor crashes when exiting and having a widget blueprint open. Regression: Yes does not occur in 4.10.2. ...

Failing to compile will cause blueprint variables to reset to their default values

UE - Gameplay - Blueprint - Jan 18, 2016

If a user creates a variable and sets it to a value that is not the default and then gets an error that prevents the blueprint from compiling, this will cause the variable to be reset to it's defaul ...

Creating a Blueprint out of existing Blueprints removes all assigned Static Meshes from components

UE - Gameplay - Blueprint - Aug 11, 2015

Creating a Blueprint out of existing Blueprints removes all assigned Static Meshes from components. Reproduced in 4.8.3 binary, 4.9 Releases (//depot/UE4-Releases/4.9/Promotable-CL-2650750), and Ma ...

Possible memory leak in FVertexFactoryData's ClothVertexFactories

UE - Simulation - Physics - Character - Oct 28, 2015

Developer implemented their own marker system with callstack data in their own custom version of malloc/realloc/free, and they reported that there might be a memory leak in the ClothVertexFactories ...

Crash Occurs When Attempting to Use Validated Get on a Local Variable

UE - Gameplay - Blueprint - Jan 13, 2016

In a function, creating a local Pawn or Actor variable, getting it, and then converting the Get to a Validated Get will cause the editor to crash upon compiling the blueprint. Found in 4.10.2 binar ...