Unreal Engine Issues
Unreal Engine Issues
Skeletal Meshes with Physics assets with less than 5 bodies will not use flag for Start Awake
UE - Simulation - Physics - Dec 8, 2015When using a Physics Asset with 4 or less physics bodies the flag for Start Awake cannot be disabled, even if unchecked, when Simulate Physics is set to true. I've attached a project with assets f ...
Startup Movies Black Screen in Packaged Projects
Tools - Jun 25, 2018Startup movies displaying black screen in packaged projects. Tested with 4.20p3 4135216 and 4.21 4157973 ...
StopMontage with different BlendOutTime not taken into account after first StopMontage
UE - Anim - Gameplay - Nov 19, 2024When an animation is currently blending out due to automatic blend out or GameplayLogic, further StopMontage with specific BlendOut will not update the time to blend out of the current blending out ...
Editor Crash When Using FRequestPlaySessionParams GlobalMapOverride To Load World Partition Map
UE - World Creation - Worldbuilding Tools - Data Layers - Dec 6, 2024The licensee has been using a custom CVAR to launch directly into PIE for a world partition level. Since updating to 5.4, this now causes an editor crash. The main factor appears to be whether or no ...
Crash when clicking "Reset to Default" button on the Details Panel for the MaterialAttributeLayers material node.
UE - Rendering Architecture - Materials - Jul 15, 2025This crash repros from at least UE 5.3 and up to latest. The following assert is hit: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 1067] Array index out of bounds: 0 in ...
Tick delta time does not provide the time between ticks (as stated in documentation)
UE - Gameplay - Aug 10, 2015In the description for delta time given for the tick event it states "Game time elapsed since last call to Tick". This sounds as though it is supposed to calculate the time in between ticks. However ...
Cannot use multiple SubScene tracks
UE - Anim - Sequencer - Jun 30, 2016Cannot use multiple SubScene tracks. When trying to add a subscene to a second subscene track, it just snaps onto the original subscene track. ...
Failed to Compile C++ Skip Conversion Project
UE - Foundation - Cpp Tools - UnrealBuildTool - Oct 21, 2016C++ projects are failing to compile when attempting to skip conversion from an older version of the engine. Error Message: C:\Users\laz.matech\Documents\Unreal Projects\MyProject4Test\Intermediate\ ...
Warning node generated on compile for component based Event Dispatchers
UE - Gameplay - Blueprint - Feb 16, 2017Creating an event dispatcher inside a component class/blueprint with an array input and using that component in another blueprint causes the event node to generate a note on compile when the event i ...
Sequencer Render: Animation not updating for a moment on camera cut
UE - Anim - Sequencer - Mar 17, 2017When rendering from sequencer to an image sequence, character animation stops for 2 frames after a camera cut. This hitch does not occur when playing the sequence in PIE I've attached some sample d ...