Crash: nullptr in FindViewComponentForActor when ActorComponent is attached to Character with Camera Component.

Gameplay - May 17, 2019

Selecting an Actor with a Camera and a C++ inherited Blueprint Component that has sub-components,then compiling the BP component leads to a crash. Upon Debugging the Crash Call Stack: FindViewComp ...

Cannot set FVector values in a "Make Struct" node in Blueprint

Gameplay - May 9, 2019

When trying to use any "Make Struct" node that uses vector values, the values typed into FVector fields will reset to 0. This is a regression from 4.21.2 (CL-4753647). This reported and tested in ...

Niagara GPU particles will always have a lifetime of one second if they use a Collision Module

Rendering - Niagara - May 2, 2019

GPU Particles will always have a lifetime of one second when using a collision module. This is a result of an issue with how off screen timing is handled. GPU particles that are off screen should on ...

Crash on RTX Laptop with ray tracing and -d3ddebug

Rendering - Ray Tracing - May 1, 2019

Editor is crashing with d3ddebug in ray tracing Does not occur in dx12 without ray tracing Does not occur on a desktop PC with a 2080 Does not occur without d3ddebug ...

Editor freezes on RTX laptop in DX12 mode

Rendering - RHI - May 1, 2019

Editor is freezing on RTX laptops with ray tracing Originally reported by Florian Dirmhirn Does not occur in dx12 without ray tracing Does not occur on a desktop PC with a 2080 I have not managed ...

"Invalid resource entry creating uniform buffer" when running Vulkan on Mobile

Platform - Mobile - Apr 30, 2019

Android projects in 4.22.1 crash on launch with Vulkan enabled. Did NOT reproduce in 4.23 MAIN at CL 6156332 4.22.1 release CL is the same as a related fix for this ( UE-73141 )  ...

Moving forward via the scroll wheel will cause the loss of movement in the viewport

Tools - Apr 30, 2019

When using the scroll wheel to move, the user will gradually come to a stop when going forward and will increase in speed when moving backward. If the user moves forward using this method until they ...

Local binary build of 4.22.1 fails when only Visual Studio 2019 is installed

DevTools - Apr 30, 2019

Attempting to create a local binary build of 4.22 using Visual Studio 2019 (with no other versions of Visual Studio installed) currently fails with several warnings and errors, including the followi ...

Crash upon opening packaged game when Event Driven Loader is disabled

Core - Apr 26, 2019

Packaged games are unable to open when Event Driven Loader is disabled. The error message given is: Assertion failed: !Linker->GetSerializeContext() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\C ...

Using CTRL+W to duplicate multiple components of an actor at once trips an assert

Gameplay - Blueprint - Apr 24, 2019

Attempting to duplicate multiple child components results in an assert being thrown.  ...