Mouse Position doesn't properly update on tick when framerate is low in standalone game

UE - Editor - UI Systems - Slate - Dec 11, 2015

If a game is run in the standalone editor and the FPS drops to ~20-30 FPS, pressing an event such as LMB and returning the mouse position on tick will cause the tick to jump inconsistently. Note: ...

ShowFlag.Rendering 0 is causing picture scintillation

UE - Platform - Mobile - Oct 21, 2016

When you use the console command for ShowFlag.Rendering 0 the screen multiplies. This happens on both iOS and Android devices ...

Notifies are retriggered on loop of an animation in Matinee/Sequencer

UE - Anim - Sequencer - May 31, 2016

Notifies are retriggered on loop of an animation in Matinee/Sequencer. This occurs during Sequencer Editor playback and when playing in game. ...

Premature prompt with failed import when Importing LOD Level for Skeletal Mesh

UE - Editor - Content Pipeline - Import and Export - Apr 7, 2016

When importing a LOD Level for Skeletal Meshes, the user is greeted with a windows directory window and a message that states "Failed to import mesh for LOD level 1" As the user states, this is a s ...

NotBoolean node is broken in specific projects for State Machine Transitions

OLD - Anim - Oct 14, 2015

In the attached project, you'll find the NewChar_AnimBP. In the state machine, there is a "NotBoolean" node in the JumpingToFallingLoop transition that appears to be broken. At first, the NotBoo ...

An Actor Reference will reset to a None when referencing a ChildActor

UE - Gameplay - Feb 11, 2016

A blueprint with an Actor Reference will reset to a None value on compile or stopping PIE User Description: We have come across a bug with the editor regarding setting direct references to child a ...

Setting Auto Possess AI to "Spawned" or "Placed in World or Spawned" will play falling animation

UE - Gameplay - Player Movement - Sep 3, 2015

If the Auto Possess AI is set to Spawned or Placed in World or Spawned then the falling animation will play in the blueprint viewport. ...

Root Motion Not Working with Multiple Slots

OLD - Anim - Jul 27, 2015

When a montage containing two slots each containing animations with root motion is played in editor: When the first slot selected, root motion functions properly with the animation. When the sec ...

Editor crash when spawning/cloning a static mesh actor

UE - Gameplay - Sep 10, 2015

Setting a FActorSpawnParameters' variable's Template to "this" and then spawning an instance of the static mesh actor using the parameter causes the editor to crash. ...

Attached actor rotates incorrectly if the parent has negative scaling on one axis and more than 1.0 scaling on another

UE - Gameplay - Dec 27, 2016

A child actor rotates incorrectly if the parent has negative scaling on one axis and more than 1.0 scaling on another. The child/parent relationship was created through the World Outliner. Licensee ...