Unreal Engine Issues

Pre-UE5 serialized FVariant FVector data corruption when deserialized in UE5

FVariant is a struct that implements a union of data types, including FVector. When assigning an FVariant an FVector value in engine versions UE 4.27 or earlier, the FVariant will deserialize incorr ...

[UDN - 00707230] DetailLayoutHelpers ensure when using VisibleAnywhere Instanced properties

From UDN Description Hello, there's an ensure that's firing in `DetailLayoutHelpers.cpp#137`: [Start code block] ensure(PropertyNodeMap.ParentProperty == CurObjectNode); [End code block]when ...

[UDN - 00655218] UDeveloperSettings change delegate not executed on import

UDN Description Hello, We extensively use the UDeveloperSettings class to automatically register project and editor settings for the different C++ plugins we build. For instance : [Start code b ...

Animation viewports can cause debug print messages to be purged

A change was made a while back so that control rig debug print messages would be displayed in the animation editor preview windows.  This is done via calling UEngine::DrawOnscreenDebugMessages from ...

Setting GDelayTrimMemoryDuringMapLoadMode = 2 causes crash on same map reload

GDelayTrimMemoryDuringMapLoadMode is a CVar that controls whether a garbage collection should take place during map change after unloading the previous map and before loading the new one. By default ...

LevelStreamingPersistence plugin improvements

UDN: [Link Removed]Fix SaveToFileCommand : [Image Removed]Problem with private properties serializing structs:[Image Removed]Add support for runtime instantiated UObject classesAdd single restore c ...

UDeveloperSettings change delegate not executed on import

From UDN case #00655218: We extensively use the UDeveloperSettings class to automatically register project and editor settings for the different C++ plugins we build. For instance : UCLASS(config ...

Copy Actors out of play mode ( 5.3.1 )

From UDN case #00645621: Is it possible that this function has been deactivated? In 5.03 I can copy objects from the game mode. ...

Casting is not working as expected for interfaces in python

MRQ Linux/Mac - Log Spam: Unable to statfs('/render_output_path.{ext}')

When rendering with MRQ on Linux and Mac (not Windows), there is a lot of statfs log spam that appears repeatedly during the render: LogCore: Warning: Unable to statfs('/render_output_path.{ext}' ...