Unreal Engine Issues

Compiling a grandchild Blueprint via automated test can lead to crash

The crash doesn't happen if the blueprints are loaded ahead of the test by opening them, or if you compile all of them in the same test run. ...

RewindDebugger draws debug capsules with its base location as center

Context UE_VLOG macros can be used to capture debug shapes into both a Visual Logger recording and a Rewind Debugger recording. Problem In the Rewind Debugger, the capsule shapes are drawn at an in ...

Crash opening Infiltrator packaged on Windows for Linux

This occurred on packages that were created on different Windows machines. This crash is not occurring on other platforms during our Samples Pass. ...

[CrashReport] UE4Editor_PropertyEditor!FPropertyEditor::IsEditConditionMet() [propertyeditor.cpp:632]

This is a trending crash coming out of 4.18.0. The issue appears similar to [Link Removed], which was just fixed in 4.18. User DescriptionsProject was just imported from UE 4.17.2 , opened a bluep ...

Editor crashes when compiling widget blueprints when the behavior section is expanded

This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 367 uint8* FObjectPropertyNode::GetV ...

Closing a Geometry's Collection Dataflow Editor window when the ChaosVehiclePlugin is enabled is crashing the Unreal Editor when running it with the -stompmalloc flag

As the title describes, closing a Geometry's Collection Dataflow Editor window when the ChaosVehiclePlugin is enabled is crashing the Unreal Editor when it is running with the -stompmalloc flag. The ...

Race condition triggers an ensure 'bIsInitialized && Other.bIsInitialized' inside FVisualLogEntry::MoveTo on animation worker thread

A licensee reported occasionally triggers an ensure during automation testing, potentially when the GameThread flushes Visual Logger via FVisualLogger::Flush() and an animation worker thread executi ...

Crash compiling blueprint referenced by Level Sequence while sequence is open

Compiling a blueprint that is used in a sequence when the blueprint exists on a sublevel will cause a crash if the level sequence is currently open. ...

[CrashReport] UE4Editor_UnrealEd!FAssetEditorToolkit::GetDefaultTabIcon()

This is a fairly common crash that occurs in the 4.17 and 4.18 releases. This callstack was originally being tracked under [Link Removed], but that had specific repro steps that were confirmed fixed ...

Datasmith error when attempting to package - Error: Ensure condition failed: It->Value File:Engine\Plugins\Enterprise\DatasmithContent\Source\DatasmithContent\Private\DatasmithAssetUserData.cpp