Cannot compile a nativized Blueprint with a function that takes an interface as an input parameter and uses it inside the function (e.g. dynamic cast to object).

Gameplay - Blueprint - May 27, 2020

Issue occurs because there is a legacy code path that forces all interface parameters to be declared as 'const' in function declarations, even if CPF_ConstParm is not set in exported C++ code. This ...

Crash when attempting to generate an event in an Event Handler

Rendering - Niagara - May 27, 2020

Crash when attempting to generate an event in an Event Handler ...

Transform node which transforms a vector from mesh particle space to world space in vertex shader doesn't work on ue4.25

Rendering - Niagara - May 27, 2020

Transform node which transforms vector from mesh particle space to world space in vertex shader always returns 0. In ue4.24, it works fine. This behavior has been changed in CL#12558699. Removing f ...

Unable To Unsolo or Solo Sound Waves

Audio - May 26, 2020

Sound Waves are not able to be soloed in a new project or unsoloed in an existing one from a prior version. This was reported and tested in 4.24.3 (CL-11590370). This was reproduced in 4.25 (CL-131 ...

Crash adding input pose node to animation State

Anim - May 26, 2020

Crash occurs when the user adds an Input Pose node to a State graph in an Animation Blueprint. ...

Template function TSparseArray::PointerToIndex does not compile

Core - May 26, 2020

Error:  C:\Program Files\Epic Games\UE_4.25\Engine\Source\Runtime\Core\Public\Containers/SparseArray.h(778): error C2440: '-': cannot convert from 'const TSparseArrayElementOrFreeListLink<TAlignedBy ...

Skeletalmesh generated LOD have issue with vertex color displacement

Tools - MeshEditing - May 22, 2020

This one should be fix in the squeletalmesh quadric reduction own by the geometry tools. ...

Inventor Assembly imports incomplete or missing geometry

Tools - Datasmith - May 22, 2020

It seems that UE4 has a problem with importing Inventor Assemblies and Subassemblies. Files are either the wrong orientation or missing their geometry completely. This was reported and tested in 4 ...