Startup Movies Fail to Play when Audio Devices are Disabled

Tools - Feb 1, 2016

If a user launches a project in Standalone mode and has a Startup movie while the audio devices on the computer are disabled, the movie will fail to play. As soon as you re-enable an audio device, ...

Runtime Virtual Texture Volume does not update correctly after World Origin shifting

UE - Graphics Tools - Terrain - Landscape - Nov 26, 2020

Get array node will disconnect on restart if it's getting from an array variable of the same bp

UE - Gameplay - Blueprint - Jun 18, 2015

Get array node will disconnect on restart if it's getting from an array variable of the same bp. User Description: I have connected GET and Target, then saved and closed the editor. Then I created ...

"Current state is a conduit and will reset to ref pose" warning when using a conduit to select an entry state

UE - Anim - Gameplay - Dec 12, 2022

AnimBlueprintLog: Error: Current state is a conduit and will reset to ref pose. This can happen if a conduit is an entry state and there isn't at least one valid transition to take. State Machine(Te ...

Collision Responses will reset to previous setting after changing the Preset Collision Profile

OLD - Anim - Mar 1, 2017

Collision Responses will reset to previous setting after changing the Preset Collision Profile. After the change is made and "Accept" is pressed, the Collision Responses will still have the old ch ...

Deadlock in UAnimationSequencerDataModel::Evaluate where FScopeLock Lock(&EvaluationLock) blocks execution indefinitely

UE - Anim - Nov 4, 2025

When both the Sequencer Editor and an Animation Curve Editor are open for the same animation asset, the editor freezes completely upon editing the curve. Analysis indicates that the freeze is caus ...

NavModifierComponent doesn't work well with dynamic owner actors

UE - AI - Mar 12, 2015

When a raw NavModifierComponent gets added to a character it cuts a hole in the navmesh (as expected) but doesn't update the location with character's movement. And it should. ...

Merge Actors (Simplify) is broken with Substrate Shader Models Node

UE - Graphics Features - Substrate - Sep 29, 2025

Substrate Materials cannot be baked when Meshes are merged using the "Simplify" method. All textures except for the normal are reduced to a single black parameter. The normal texture produced does n ...

Emitter Delay Range will only recalculate each loop when Emitter Duration is checked True

UE - Graphics Features - Jan 12, 2015

To have a Particle System use an Emitter Delay Range that is chosen on each loop of the emitter, you must have under Duration, Duration Recalc Each Loop set to True. ...