Unreal Engine Issues

Editor Crashes After Building Lighting with Blueprint Set to Native Parent Class: Light

Whenever a Blueprint set to Native Parent Class: Light is placed into a level, Editor crashes after building lighting. The Blueprint does not need to contain an actual light component to crash the e ...

Crash: Nativized AnimBP instances can assert on load in a cooked build with async loading enabled.

This is a regression that was introduced alongside a memory optimization for Animation Blueprint assets. Suggested workarounds:Disable "Async Loading Thread Enabled" ORDisable Blueprint nativizati ...

[CrashReport] UnrealEditor-LevelEditor!FViewportClient::InputKey(FInputKeyEventArgs const &) [UnrealClient.h:851]

Generated from CrashReporter ...

Crash when quitting the editor with VR Mode enabled

Qutting the engine with VR Editor on causes a crash. I could not determine a way to close the VR Editor internally so I terminated the Project by using the Desktop. Many users among the community ...

[CrashReport] static void AddHairStrandMeshProjectionPass(class FRDGBuilder & const, class FGlobalShaderMap *, const bool, const int, const struct FHairStrandsProjectionMeshData::Section & ...

Crash in FVulkanLinuxPlatform

Using the command in the repro steps on Linux will cause the Editor to crash and CrashReporter to pop up with a callstack. This behaves differently when tried on Windows with -vulkan. The project ...

[AI] Crash in UGameplayDebuggerLocalController::OnDebugDraw

UGameplayDebuggerLocalController::OnDebugDraw crashed with a dereferenced nullptr for CachedReplicator. ...

[AI] SmartObject with Precondition in a persistent collection crashes editor when exiting PIE

Adding the Precondition to the SmartObject caused an assertion when it was part of a persistent collection. The precondition needs to be able to pass its Activate method to cause the assert. This b ...

Crash may occur if Actor is selected on the outliner and then discarded

Discarding Actor while it is selected on the outliner may cause a crash. This may be caused by operations from C++ not being listed in the UNDO list, which may refer to unreferenced objects during ...

Editor crash when drag and drop the Image widget in a NamedSlot on the designer

When first added as a child widget in NamedSlot, the child widget can be dragged and dropped onto the parent widget's designer. The following assert causes a crash. Assertion failed: ParentWidget ! ...