Unreal Engine Issues
Unreal Engine Issues
Instanced static meshes fire an erroneous performance assert about loose parameters.
UE - Graphics Features - Sep 4, 2019"This ensure is intended to catch regressions where rendering programmers add a loose parameter to LocalVertexFactory, breaking dynamic instancing on regular static meshes. InstancedStaticMeshes c ...
Crashes when copying an array of actors that implement an interface into an array of interface references
UE - Gameplay - Sep 17, 2019When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...
Blueprint Actor cannot delete implemented interface when Interface is converted to an Event.
UE - Gameplay - Blueprint - Dec 11, 2019In Editor, When you remove a return value parameter from a Blueprint Interface function's Output Category. (so there are no return values), it becomes an event. In any Blueprint that implements the ...
BP timelines: when converting internal curve to external, the external curve isn't used until BP is recompiled
UE - Framework - Blueprint Editor - Aug 28, 2023Blueprint timelines: when converting an internal curve to an external curve asset, the curve asset's data isn't used until the blueprint is recompiled. This is confusing as there is no indication th ...
'GetClassDefaults' Can Cause Blueprint To Become Modified When Unrelated Blueprint Is Compiled
UE - Gameplay - Blueprint - Sep 22, 2023The stems from a really old change (CL 2948683) to fix [Link Removed]. Compiling ObjectA will call RefreshExternalBlueprintDependencyNodes on its dependent BP, ObjectB_ReferencesA, which reconstru ...
XAudio2 DestroyVoice call causes significant hitching on some architectures
UE - Audio - Aug 10, 2015Another thread: https://answers.unrealengine.com/questions/241358/amd-cpu-very-low-performance-because-ixaudio2sourc.html Note: This not a regression and has existed since our first implementation ...
Using Show Mouse Cursor and Ejecting Prevents Actors from Being Moved
Tools - Mar 31, 2016When you have the mouse cursor set to show in game, if you use shift+f1 to unlock the mouse, eject, and then attempt to click and move an actor using the transform gizmo, you are unable to do so. S ...
Auto-weld is Enabled even if the blueprint component is set to Simulate
UE - Simulation - Physics - Jan 4, 2017Auto-weld is Enabled even if the blueprint component is set to Simulate. This only effects blueprint, static mesh actors in the world still disable Auto-weld if set to Simulate. This is a Regressio ...
Static Mesh Editor: Give options for drawing complex/simple collision
UE - Simulation - Physics - Mar 13, 2017The collision mesh and the display mesh are often similar enough to be difficult to differentiate, and there is currently no way to view the collision wireframe without the display wireframe as well ...
SetChildActorClass does not replicate when set to a different class
UE - Gameplay - Feb 20, 2019When using SetChildActorClass to change a Child Actor Class, the change will replicate on the Server but not the Client. The Client will have the original Actor Class after the change happens. This ...