Failed to launch project with -D3D10 Command Line Argument

Rendering - Jun 3, 2019

Adding the d3d10 command line argument to a package project results in a crash. This worked normally in 4.21 and below.  ...

Crash on attempt to clear(NullifyInstance) of duplicated Hierachial Instanced Static Mesh

Tools - May 31, 2019

When creating an C++ Actor with a Hierarchical Instanced Static mesh. when duplicating such an actor with mesh instances, the instances are not visible on the level. In this state, calling HISM comp ...

Crash when debugging project offscreen

Rendering - May 30, 2019

Running a project with the RenderOffscreen flag in the DebugGame configuration applied causes the debugger to crash. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 6674923) ...

Overriding a Custom function(From Parent) with no return output in a Child Blueprint results in custom function appearing in event graph of child blueprint.

Gameplay - May 30, 2019

Overriding a Custom Function from a Parent Blueprint with no return output in a Child Blueprint results in custom function appearing in event graph of child Blueprint. ...

Package build crashes when using Niagara system on a Skeletal mesh

Rendering - Niagara - May 29, 2019

Packaging a project having a skeletal mesh with a niagara system attached to it in the scene causes the build to crash when running the executable.  I have attached the log and dmp files relevant t ...

Show Volumes command does not work correctly if volume was converted from brush

Debug display using "show volumes" does not work for volumes converted from brushes. The reason is that bHidden = true is done in the constructor of ABrush. So, we will probably need to run SetVi ...

Crash when the location of actor changes while executing SetAnimInstanceClass

Anim - Animation - May 27, 2019

This issue doesn't occur at 4.21. It seems in 4.22 only. Bone is broken in the second SetAnimInstanceClass. It seems CurrentReadComponentTransforms doesn't update. [Workaround] ・Wait using timer ...

Image Distortion when Rendering an Image Using Sequencer in DX12

Rendering - May 25, 2019

Images are distorted when Rendering out a single image from a level sequence in DX12. Found in 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6599617 ...

Compilation fails after binding an event to a server-only delegate property in the Blueprint editor.

Gameplay - Blueprint Editor - May 24, 2019

Attempting to bind a custom event to a server-only delegate property currently fails to validate after compiling a Blueprint. ...

When the particle system manager is enabled particle system components will always tick in start physics

Rendering - Cascade - May 24, 2019

The particle manager only accounts for the particle system component's attach parent's EndTickGroup. When setting the tick group through the actor component the TickGroup is set instead of the EndTi ...