Unreal Engine Issues

Error when Compiling an AIController Blueprint Class with an AIPerception Component

An error populated the output log when Compiling an AIController Blueprint Class with an AIPerception Component. This is not a Regression, as it Occurs in //UE4/Main. ...

When changing the Material of a CompleCollision during PIE, the change is not applied to the PhysicsMaterial.

If changing the material during PIE, the content of the material will be reflected immediately, but the physics material will not. Once the Mesh (Complex Collision Mesh) is cleared and reset, it wil ...

The public header file ModelingToolsEditorModeToolkit.h exposes private module definition of ENABLE_STYLUS_SUPPORT

Crash changing mesh paint material in blueprint, then changing to a different mode tab

The editor crashes changing from mesh paint mode to another mode if the user has changed the material of an "Add Static Mesh Component" or "Add Spline Mesh Component" in a BP and compiled while in m ...

MoviePipeline: ExecutorJob UserData field lost on Queue Load

I didn't check with the debugger, but I suspect this is caused by: void UMoviePipelineExecutorJob::OnDuplicated_Implementation() { UserData = FString(); When the queue is loaded, each job is dupl ...

External reference error when trying to save Level Sequence Actor

External reference error when trying to save Level Sequence Actor after a change has been made. The error given is "Can't save ../../../.././../Users/YourUserName/Documents/Unreal Projects/YourProje ...

Material Opacity Mask Not Working As Expected in PIE but Does in Standalone

Material Mask Opacity is not working in PIE, but works as expected in Standalone.  Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4862710, and 4.23 CL# 4898645 ...

Actor Sequence Component Not Working While Playing in Standalone

When using an Actor Sequence Component in an actor blueprint, the sequence will not play in Standalone. In the test, a cube was used and was increasing its scale using the sequence. When playing in ...

Tutorial Blueprints breaking unreal builds

Creating a Tutorial Blueprint in the main content folder of a new C++ project causes some errors with new projects if the Blueprint is moved afterwards. ...

Water_Material crashes editor when adding "Scene Depth Without Water" node