SetOneWayInteraction functionality has no effect on the simulation

UE - Simulation - Physics - Nov 11, 2022

Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...

The node wires in this project's MyCharacter blueprint do not animate during PIE

UE - Gameplay - Blueprint - Mar 13, 2015

The node wires in this project's MyCharacter blueprint do not animate during PIE. This also occurs with the NPC and AI Blueprints the first time you PIE, but the second time they animat as expected. ...

Skylights not Updating in Blueprint Viewport

UE - Graphics Features - Sep 26, 2016

When modifying the properties of a Skylight actor as a component within Blueprints, the changes are not reflected in the Blueprint viewport. If you drag the blueprint into an empty scene and modify ...

Frame 0 event does not get triggered when using SetPlaybackPosition

UE - Anim - Sequencer - Apr 17, 2018

An event at frame 0 of a sequence does not seem to get called when using "SetPlaybackPosition 0" to reset the playback position to the start. This seems to be a regression. 4.17.2, the frame 0 even ...

Landscape Grass Output Instances begin to float when using the Retopologize Tool

UE - LD & Modeling - Terrain - Landscape - Mar 14, 2017

When using the Retopolgize tool on a landscape that is utilizing the Landscape Grass Tool, any pre-existing grass types will begin to float and transform their locations. The only way myself and th ...

Masked Materials have become more expensive to use

UE - Graphics Features - Aug 18, 2016

Masked Materials have become more expensive in 4.13 and internal builds than in 4.12. Images attached for demonstration along with test map using the bush prop from starter content. Tested with ...

Audio in animation editor does not work properly

OLD - Anim - Apr 21, 2017

There are multiple issues with the code at present 1) The animation preview world listener is not updated. This can be solved with the following override on AnimationEditorViewportClient (Following ...

The DefaultSceneRoot's tooltip claims adding a new scene component will automatically replace it as the new root, but this is no longer true

UE - Gameplay - Components - Jun 24, 2015

The DefaultSceneRoot's tooltip claims, "Adding a new scene component will automatically replace it as the new root", but this is no longer true in 4.8 and 4.9. Instead, the DefaultSceneRoot remains ...

Debug symbols are required for the Shipping packaging configuration

Tools - Feb 11, 2016

If the engine is installed without the Debug Symbols, packaging for Shipping will fail due to the missing files. While I believe this is expected for Development, it shouldn't occur with shipping. ...

Child Actor components on Clients use the incorrect default values for variables that are not being replicated

UE - Gameplay - Blueprint - Aug 28, 2018

When a Child Actor's class is replicated but the individual variables are not, the individual variables will use the default of the original BP class instead of the defaults that were set in the Chi ...