Separate Translucency for Particles Breaks when Scene Color is used

UE - Graphics Features - May 12, 2015

When using Scene Color in a Particle System's Material with Separate Translucency checked true, all Particles with Separate Translucency checked true placed in the level with the Scene Color Particl ...

Haptic Effects do not fire on Vive controllers

UE - Platform - XR - Mar 5, 2016

Playing haptic effects via the associated blueprint nodes (I.e. Play Haptic Effect, or Set Haptics by Value), does not trigger any feedback on the Vive's motion controllers. This does not reproduce ...

Editor freezes when using multiple Post Process Volumes with Cubemaps assigned

UE - Graphics Features - Jun 13, 2016

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 ...

tvOS encounters failure to read save file when loading saved level

UE - Platform - Mobile - Nov 20, 2019

When load is called user encounters: [UE4] [2019.11.20-23.42.09:282][575]LogStreaming: Warning: Failed to read file '../../../QAGame/Saved/SaveGames/TestSlot.sav' error. The integer value does not ...

Long thin spinning objects take too long to stop spinning

UE - Simulation - Physics - Solver - Jun 5, 2023

See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...

[CrashReport][GPU Crash] NodeAndClusterCull

UE - Graphics Features - Nanite - Nov 19, 2024

Users affected: 51 Total occurrences: 90 Last occurrence: November 19th 2024, 3:25:41 am First occurrence: August 7th 2024, 8:10:10 pm Latest version: ++UE5+Release-5.5-CL-37670630 Platform: Win64 [ ...

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 ...

Macro Library tries to recompile upon PIE when Auto Recompile is turned off and library does not need to be recompiled

UE - Gameplay - Blueprint - May 11, 2016

Macro Library tries to recompile upon PIE when Auto Recompile is turned off and library does not need to be recompiled. Note The macro library does not have to be used to cause the compilation mes ...

Sphere Object Not Firing Hit Events

UE - Gameplay - Mar 14, 2016

When moving a sphere using Add Actor World Offset, hit events on that sphere are not fired. However, doing the same thing with a cube causes hit events to fire off as expected. When you enable grav ...

Significant Performance Drop During Play While Behavior Tree is Open

UE - AI - May 18, 2016

Attempting to play in editor, standalone, or VR Preview when a behavior tree that is running is open will cause a significant performance decrease. The framerate drops from ~120 to ~80 fps while the ...