Unreal Engine Issues
Unreal Engine Issues
Metasounds - Using the Audio Component Play Node with a start timer other than 0 results in the Metasound ceasing to function
UE - Audio - MetaSounds - Dec 2, 2021Metasounds cease functionality if called to Play with a different start time other than 0. This extends to the Metasound editor where pressing play to preview the sound also ceases to function. ...
LIVE: Editor crash on open if saved with detached viewport and sky light in level.
UE - Graphics Features - Oct 21, 2014If there is a sky light in a scene and the viewport is detached and closed prior to saving, the editor will crash when trying to reopen the project. Crash Reporter: 431802 ...
Bake to Control Rig blueprint function does not work on tracks in nested sequences in Editor
UE - Anim - Sequencer - Aug 20, 2025The Bake to Control Rig node only works with single-layered level sequences. Studios using a nested level sequence setup cannot use this function. [Link Removed] ...
D3D Crash applying Built Lighting in a level containing Static Foliage
UE - World Creation - Worldbuilding Tools - Foliage - Jun 20, 2017Editor session crashes applying Built Lighting in a level containing Static Foliage. Note: this crash does not occur if the Instanced Foliage Mesh has mobility set to "Movable" within the Foliage D ...
Local variables in Blueprint functions don't support default values of Custom Structs
UE - Gameplay - Blueprint - Jun 9, 2015I make a custom struct and assign default values to it's member floats, etc. When I use that in a Blueprint, the defaults work as expected. However, when I reference it as a local variable in a BP f ...
Engine Crashes When Building Lighting if Precomputed Visibility Aggressiveness is set to VIS Max
UE - Graphics Features - Nov 30, 2017The engine crashes when building lighting if World Settings >> Precomputed Visibility >> Visibility Aggressiveness is set to "VIS Max." A Fatal Error message sometimes appears (screen shot attached) ...
Multi-line text functionality is removed from a print string variable when the variable is turned into an array within a struct
UE - Gameplay - Blueprint - May 5, 2016Multi-line text functionality is removed from a print string variable when the variable is turned into an array within a struct. Regression (no), Multi-line text functionality for strings in struct ...
Static variable declaration causes unresolved external errors when calling FRootMotionMovementParams functions
OLD - Anim - Jan 11, 2017Attempting to call a FRootMotionMovementParams function results in an unresolved externals error on compile because of the static FVector RootMotionScale variable. Workaround: In source, removing s ...
Crash on PIE exit after dynamically enabling and disabling tick functions through the Level Script blueprint.
UE - Gameplay - Mar 23, 2018User reports hitting an assertion due to invalid FTickTaskManager state when game is attempting to unregister a tick function that was previously disabled dynamically. Failed assertion is in FTickT ...
Text local variables and function parameters do not store package scope properly
UE - Gameplay - Blueprint - May 14, 2019FText variables are saved with a Package Namespace stored inside them, that keeps track of the package they were created for. This allows the translation key to stay consistent over time. Blueprint- ...