Unreal Engine Issues

Changing function return type in code does not update blueprint pin links

When the return value of a C++ function is changed without preforming a hot reload, instances of the function node used inside a blueprint function will have their Return Value pin updated to the co ...

Distance Fields do not work with Directional Lights when using a AMD Radeon card.

Distance Field shadows do not appear to be working with those using Radeon series cards. Sample project attached DXDiag of machine that is having the issue is attached. AMD Radeon 200 series. ...

HISMC always shows lowest LOD

User report: HISMCs are currently broken in master. They always show the lowest LOD available for a mesh, so if you have a HISMC with a tree mesh set, you would always see the billboard of the tree ...

Unable to edit inherited component properties in a Blueprint if the Component type is set to None and the Blueprint is compiled

If an inherited component that uses the EditAnywhere specifier has the component type drop down set to None, the component's details can no longer be edited in the Details tab after the Blueprint is ...

Ensure condition failed: bPlayingBackwards ? (CurrentPosition <= PreviousPosition) : (CurrentPosition >= PreviousPosition)

The problem is caused by the animation sequence playback position being set out of range from Sequencer. The call stack is :  UE4Editor-AnimGraphRuntime.dll!FAnimSequencerInstanceProxy::UpdateAnim ...

Anisotropy renders differently in each eye in VR

Regression: Tested in Release-5.0, this issue occurs so it is not a regression. This issue was first reported using the Automotive Materials assets, as the Anisotropy material on MI_Metal_Brushed w ...

Editor freezes when using multiple Post Process Volumes with Cubemaps assigned

When using a cubemaps assigned to a Post Process Volume and loading the level the editor will freeze if it's been a project converted from 4.11 to 4.12/4/13. In some instances if the camera is outsi ...

Lumen causing exposure issues when several viewports are opened

Changing a Packaged Game from Fullscreen to Windowed at Runtime Causes Title Bar to Disappear

When changing a packaged game from Fullscreen to Windowed mode at runtime, the window is placed in the top left corner of the monitor and the title bar disappears. Setting FullscreenMode=2 in the G ...

Layered Control Rigs + Skeletal Mesh with Animation Blueprint in the Sequencer

When a layered control rig track is added to the sequencer the character’s legs will collapse into the body of the character. Switching the layer to additive will do nothing. Trying to force the ani ...