Unreal Engine Issues

EditCondition doesn't work on C-arrays

Toggling a bool doesn't enable/disable the elements of the array similarly to how it does for TArray in the details panel. Static arrays should have the same semantics as TArray with regards to edit ...

Crash calling destroy actor for Geometry Collection while it's simulating

Crash occurs when user call Destroy Actor on a Geometry Collection Actor. This seems to only occur while the actor is simulating. If called while on the ground, it doesn't seem to occur. ...

UDelegateProperty define missing in DefineUPropertyMacros.h

The following code should be added in defineUPropertyMacros.h #ifndef UDelegateProperty #define UDelegateProperty DEPRECATED_MACRO(4.25, "UDelegateProperty has been renamed to FDelegateProperty") F ...

Use of SpiralBlur-SceneTexture MaterialFunction in translucent material results in compile errors

This appears to be new in 4.25. ...

Instance Synced properties in Blackboard cause a crash

Using an Instance synced property in a Blackboard causes a crash when exiting PIE. This is a regression from 4.24.3 (CL-11590370). This was reported and tested in 4.25 (CL-13144385). This was teste ...

Staticmesh "Reimport+LODs" do not recover the material ID for custom LOD

SpeedTree assets cannot be imported via Python automated import

Licensee reports via UDN that automated import via Python of SpeedTree assets does not work The issue is that USpeedTreeImportFactory::FactoryCreateBinary() tries to generate a UI dialog, which is ...

Memory leak after simulating in Editor with opened 'Editor Preferences' tab

This can be repeated many times before the editor crashes without any messages and other programs with the video driver crashes too. Because out-of-memory. This is similar to [Link Removed]. This w ...

Blackboard SelfActor key is not correctly being set

REGRESSION: Does not occur in 4.24 The Blackboard Self Actor key is not automatically getting set in the AI Controller. ...

FLowLevelMemTracker::GetTagAmountForTracker with CustomProjectTag returns 0 always

FLowLevelMemTracker::GetTagAmountForTracker with CustomProjectTag returns 0 always. Because of FLLMTracker::FLLMThreadState::GetFrameStatTotals don't amount to about CustomTags. Following code will ...