Changing the navigation for the root of a widget blueprint will cause a crash

UE - Editor - UI Systems - Sep 28, 2015

Changing the navigation of the root of the widget blueprint will cause the editor to crash ...

Setting meta data to custom MetaData class does not save after restarting editor

OLD - Anim - Apr 8, 2016

When setting a custom meta data class in an Animation Montage, the class set is not saved when the editor is closed / reopened. ...

AI Perception Not Showing Up in Debugger

UE - AI - May 20, 2016

AI Perception does not seem to be showing up in the debugger. The same setup functioned as expected in 4.11.2 binary, but upon converting the project to 4.12 Preview 4 binary, no debug information w ...

Max Angular Velocity Value Being Reset

UE - Gameplay - Jun 6, 2016

The value of Max Angular Velocity on a component is being reset after changing the value and compiling the blueprint. Found in 4.12 binary, reproduced in Main CL 2994701. Could not reproduce in 4. ...

Ctrl+Alt selection drag inside to outside of Matinee window will crash the editor

Tools - May 18, 2016

Ctrl+Alt selection drag inside to outside of Matinee window will crash the editor Reproduced in Releases stream 2982080 as well, to verify that this wasn't the same bug as https://jira.ol.epicgames ...

Behavior tree observers don't work with OnValueChange mode

UE - AI - May 25, 2015

Behavior tree observers do not notice the OnValueChanges ...

"Navmesh needs to be rebuilt" shows up during runtime navmesh generation

UE - AI - Mar 24, 2015

"Navmesh needs to be rebuilt" shows up during runtime navmesh generation ...

Landscape Layer blend node inconsistency

UE - LD & Modeling - Terrain - Landscape - Mar 24, 2015

When the landscape has no textures the landscape layer blend material node will render as the first layer. When painting only holes onto the landscape, the landscape will have a layer texture but st ...

Audio cue that is playing is restarted when a branch parameter is changed

UE - Audio - Oct 6, 2015

When using a branch node inside of a Sound Cue, if that branch's bool parameter is changed while the cue is playing, the cue will be restarted from the beginning. Link to project: [Link Removed] ...

Unexpected behavior resulting from overlapping or touching physics actors when Simulate Physics is enabled through input

UE - Simulation - Physics - Sep 21, 2015

Weird behavior occurs when toggling Simulate Physics on physics actors by input instead of on BeginPlay. Multiple odd behaviors are present such as touching physics actors ignoring collision. Test ...