Unreal Engine Issues
Unreal Engine Issues
Can change type of event dispatcher in Blueprint
UE - Gameplay - Blueprint Editor - Oct 2, 2018It seems that with 4.20 users are able to change a dispatcher's type from Multicast Delegate to something else (float, int, etc.) Doing so will cause any node that references the dispatcher via call ...
Child Blueprint construction script runs before parent C++ OnConstruction
UE - Gameplay - Jun 25, 2019When the order of construction is backwards it makes it impossible to have native objects set up components in OnConstruction, that a child BP Construction Script then has access to. Sometimes the C ...
Unable to delete levels with Particles in them
UE - Gameplay - Oct 9, 2019The engine is unable to Level that has a Blueprint actor with a child actor component that has a particle system component. The follow message pops up: World /Game/LevelName.LevelName is in use. — ...
Potential Memory Leak when frequently terminating and re-initializing FConstraintInstance
UE - Simulation - Physics - Mar 29, 2022From User: When frequently terminating and re-initializing the FConstraintInstance, there appears to be a leak when cleaning up the disabled joint, which leads to an ever growing list that gets sort ...
SetOneWayInteraction functionality has no effect on the simulation
UE - Simulation - Physics - Nov 11, 2022Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...
[Interchange] Crash on asset re-import
UE - Editor - Content Pipeline - Import and Export - Feb 7, 2025We've started seeing a crash in editor when re-importing one of our assets. <pre class="ql-syntax">Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 783] Array index out of ...
OSX editor fails to run on "older" hardware
at first, a "OpenGL Not Supported" message box appears and then the Editor instantly crashes after the "OK" button has been pressed. I tried again, but this time, passing in the "-opengl" flag. it ...
Crash playing source media file after attempting to play undefined source file
Media Framework - Mar 2, 2017After attempting to preview the undefined File Media Source in the Media Player Window and getting an error. I set the path of the File Media Source to Windows sample video 'Wilflife'. Then attempt ...
Foliage disappears after 1.5k if occlusion culling project setting is disabled
UE - World Creation - Worldbuilding Tools - Foliage - Aug 30, 2017When unchecking the Occlusion culling option in the project settings, if you place over 1.5k foliage meshes in the world, they stop rendering, the meshes are still present in the level and can be se ...
Preprocessor checks for VS 2017 version of MSC do not look for the latest version of MSC
UE - Foundation - Core - May 8, 2018There are some pre-processor checks in the Engine code that look for the version of MSC that was introduced with Visual Studio 2017 (eg. #if _MSC_VER == 1900). However, this does not take into consi ...