Unreal Engine Issues

UMG Drag and Drop stops working in a Packaged or Standalone Game

Drag and drop operations just become broken on packaged builds or launching stand-alone, despite working inside the Editor (PIE). This is a regression from 4.19.2 (CL-4033788). This issue was repor ...

Changing variable type of event dispatcher results in permanent warning

If you change the type of an event dispatcher variable (why is this a thing?!), then you will permanently have a warning of the form "No delegate property found for NewEventDispatcher_0" that will ...

Lighting not building in sublevels using Resave Packages

Licensee found that running the resavepackage commandlet that sublevels who's lighting was built were not saving the changes. ...

[Sketchup-Reimport]-Objects presence in level on reimport with unchecked Geometry

Toggling visibility of Sublevels on a server can cause a disconnect if Dynamic Actors exist in the sublevels.

The PackageMap / NetGuidCache appear to get into a bad state on Clients if the Server toggles level visibility of a sublevel. This can affect currently connected clients, as well as clients that jo ...

[CrashReport] UE4Editor_ShaderCore!FVertexFactory::SetPositionStream() [vertexfactory.cpp:218]

User comment in crash group:error when i reimpot a mesh from a .fbx create in 3d max 213 void FVertexFactory::SetPositionStream(FRHICommandList& RHICmdList) const 214 { 215 ...

[CrashReport] UE4Editor_CoreUObject!PackageReloadInternal::LoadReplacementPackage() [packagereload.cpp:274]

No user comments in crash group 262 UPackage* LoadReplacementPackage(UPackage* InExistingPackage, const uint32 InLoadFlags) 263 { 264 if (!InExistingPackage) 265 ...

Landscape：Shadowmap the landscape casting doesn't match visual mesh after build lighting

Adding Variable to Struct (Exposed on Spawn) breaks SpawnActor functionality without error/warning

Adding a variable to a Struct used with SpawnActor breaks functionality without warning. Workaround: Clear Class from SpawnActor and reassign same class User Cites Blueprint Compile manager as fau ...

SolidWorks 2018 Assembly Datasmith Importer Error

A failed to import error is received when importing various SolidWorks 2018 Assembly files. A lot of the attached models are imported IGS files and were made into SolidWorks parts. Tried testing th ...