Unreal Engine Issues

"Pausing" A TimeSynth causes a crash

Clicking and holding anywhere on the editor outside the viewport when PIE causes a crash. The AudioRendering thread throws the following assert: Assertion failed: FreeClipIndex < PlayingClipsPool_Au ...

thumbnail is updated at an unintended timing

This seems to be because the OrbitZoom of ThumbnailInfo is rewritten by ResetCamera () when the viewport is opened. Is this correct processing? ...

LivePP won't react with CTRL+ALT+F11 when debugger is break

Before we were able to request CTRL+ALT+F11 while debugger is paused, then resuming the debugger (F5), LivePP was kicking, rebuilding before really unpausing the debugger. Now, if I want LivePP to ...

MoviePipeline: Can't inherit from UMoviePipelineSetting in BP due to PURE_VIRTUAL

IsValidOnMaster/IsValidOnShot need to be BlueprintNativeEvents with a default C++ implementation and allow derived classes to override the function. This is needed so that you can create custom set ...

Third Person C++ Template Package Fails to Launch with Assert Error Window

Occurs 3/3 times. Third Person C++ Windows package crashed on launch with Assert Error Window (see attached screen capture) Regression occurs: Repro'ed in //UE4/Release-4.27 EGL Live @ CL18429761 ...

LiDAR assets do not render in after relaunching the engine

LiDar point clouds are failing to render when saving and relaunching the project This issue is occurring in //UE5/Release-5.3 @ CL 26560699 This issue is occurring in //UE5/Release-5.3 @ CL 2600198 ...

SplineMeshActors all share the first spline placed rather than their own spline when using the mobile renderer.

SplineMeshActors all share the first spline placed rather than their own spline when using the mobile renderer. This was first reported in this UDN: https://udn.unrealengine.com/s/question/0D54z0000 ...

Enhanced Input Pressed Trigger firing twice

GetTriggerEvent() in a function bound to an enhanced input action in C++, returns "Triggered" when bound to the "Started" trigger event. ...

[CAD Import] Metadata are totally different when loading an IFC file through TechSoft.

Foliage HLODs don't respect "Disallow Nanite"

We have a level with foliage meshes that has been placed via the foliage system. We want to place these into HLOD Layers so that we can disable nanite, and thus enabling the imposter LODs at a dista ...