Modifying Override Parameters on NiagaraActor blueprints created from a System Actor does not work

UE - Niagara - Cinematics - Aug 5, 2020

Modifying Override Parameters on NiagaraActor blueprints created from a System Actor does not work The System component appears to only use the default value set in the System.  This issue does no ...

Changing blueprint default values inside arrays only updates loaded child blueprints

UE - Foundation - Core - Jul 30, 2020

The rules for delta serialization in UE4 are complicated, and the editor tries to hide them from you, which works 90% of the time but can lead to confusion and data loss in other situations. In the ...

Blueprint classes are listed in Object pickers, but will not work as expected

UE - Gameplay - Blueprint - Jul 28, 2020

Because of the way blueprints are implemented, the "Blueprint Class" asset actually points to the editor-only UBlueprint object. Because of this, all blueprint classes will show up as options for ge ...

Pasted variable's default value is not preserved if you compile between undo and redo

UE - Gameplay - Blueprint Editor - Jul 17, 2020

If the user compiles the blueprint between undoing and redoing the pasting of a variable, the variable's default value is not retained. ...

Character rotations can diverge between clients and client/server briefly under packet loss and using bOrientRotationToMovement

UE - Gameplay - Player Movement - Jun 4, 2020

At some points the rotations will diverge briefly while the client and server attempt to rotate to the orientation direction by going different directions about the rotation axis. ...

Screen space reflections are flickering when using no Anti Aliasing

UE - Graphics Features - May 20, 2020

This is a regression from 4.24.3 (CL-11590370). SSR begins to flickers when AA is disabled when moving around the scene. This was reported and tested in 4.25 (CL-13144385) and reproduced in Main 4. ...

SSR Experimental Denoiser crashes when enabled using Vulkan

UE - Graphics Features - Apr 27, 2020

Enabled the SSR Experimental Denoiser using Vulkan causes the Engine to crash. This crash does not happen with DX11 or DX12. This happens on Linux and Windows (-vulkan). This was reported and teste ...

Large Landscapes using World Composition have weird LODs when streamed out and back in

UE - World Creation - Worldbuilding Tools - World Composition - Mar 13, 2020

When World Composition Sublevels are streamed out and back in the LODs appear distorted. This reported and tested in 4.24.3 (CL-11590370). This was reproduced in 4.23.1 (CL-9631420), 4.25 Preview ...

Blueprints: Dragging variables into Categories with camel case naming adds spaces to the Category name; creating a second category in details view

UE - Gameplay - Blueprint Editor - Jul 18, 2019

In a blueprint: When dragging a variable onto a Category, and the Category name uses CamelCase, the resulting Category name of the variable will have spaces where the original did not.  "TestCategor ...

Project fails to package when given the name "Test" and Encrypt Pak ini Files is enabled

UE - Foundation - Core - May 22, 2019

Project fails to package when given the name "Test" and Encrypt Pak ini Files is enabled Error: UATHelper: Packaging (Windows (64-bit)): ERROR: No target name was specified on the command-line. ...