Unreal Engine Issues
Unreal Engine Issues
Building lighting after map data is built dirties level
UE - Graphics Features - Oct 5, 2017There is an issue occurring where after the map built data is made building lighting on a level causes the level to become dirty. this occurs even if anything in the level has not been changed excep ...
EnableGameSound in PIE settings won't work after LoadMap is called
Tools - Jan 11, 2019When PIE is started with the Enable Game Sound box unchecked, we set master volume to 0 to mute game sounds. However, any call to LoadMap will both flush the audio device and set the volume back to ...
Collision settings of an Instanced Static Mesh setup in the Construction Script are not preserved when the Actor is added to an Instanced Level
UE - Framework - Components - May 23, 2022Tested in //UE4/Release-4.27 CL 18319896 using Level Streaming the camera was ignored by the ISM_Cube. Collision settings of an Instanced Static Mesh setup in the Construction Script are not preser ...
The Editor "Show Frame Rate and Memory" does not display the intended output on macOS.
UE - Platform - Apple - Jan 11, 2023Repro Rate: 5/5 This is a live issue that has been tested in the Binary build of //UE5/Release-5.1 at CL 23058290 and DOES NOT OCCUR in Windows and Linux but DOES OCCUR in Mac. This was tested on d ...
Camera Shake can apply a new post process material every tick when post process material has "Is Blendable" disabled
UE - Anim - Sequencer - Mar 26, 2024In the repro project the player camera has a post process material that slightly darkens the frame by subtracting 0.01 from the final color. When a camera animation based on a camera sequence is pla ...
FD3D12BindlessResourceManager::GrowCPUHeap will cause GPU heap activation whether it's needed or not
UE - Rendering Architecture - RHI - Sep 11, 2025The ctor of FD3D12BindlessResourceManager implies that GPU heap activation is intended to occur lazily with ERHIBindlessConfiguration::RayTracingShaders, however any call to FD3D12BindlessResourceMa ...
Crash When Adding a second animation timeline after adding keys to the first
UE - Anim - Sequencer - Nov 16, 2015If the user adds a second time line to a widget blueprint after the first has had a key frame add then the editor will crash if the curve editor is selected. ...
Crash reparenting actor component to InstancedStaticMeshComponent
UE - Gameplay - Blueprint - Sep 14, 2016Reparenting an actor component to an instanced static mesh component causes a crash. Found on //UE4/Dev-Blueprints CL-3122712 ...
Crash right-clicking in anim blueprint asset picker
OLD - Anim - Mar 10, 2017Editor crashes when right-clicking in the blank area of the anim blueprint asset picker ...
Editor Crash on Mac after creating blueprint structure
UE - Gameplay - Blueprint - May 10, 2017Creating a blueprint structure in the content browser causes the editor to lock up and become unresponsive. ...