Unreal Engine Issues

Static array based on an enum does not show the enum element names if a C-style cast is used with a space between the type being cast to and the enum

A static array based on an enum does not display the enum names in Blueprints if the size of the static array uses an explicit C-style cast with a space between the type being cast to and the enum b ...

Cannot use "ProjectName (Debug) (ProjectName)" debug configuration in VSCode on Mac with binary Engine installation

Attempting to debug in VSCode on a Mac using the ProjectName (Debug) (ProjectName) configuration fails due to a missing precompiled file in the binary Engine installation. REGRESSION: No. The same ...

Unreal Frontend crashes when loading a ue4stats file

If Unreal Frontend has been built in the Development Editor configuration, attempting to open a ue4stats file in the Profiler tab results in the Unreal Frontend crashing. The crash does not occur if ...

Building UE4 solution fails in Test configuration

Attempting to build the full UE4 solution for the Test configuration fails in 4.21. Most projects will build successfully, but a few will fail with various errors. Most of the errors appear to be re ...

The "alignas" keyword cannot be used with a USTRUCT

The alignas keyword is not usable with a USTRUCT. It can be used with a normal struct. ...

FGenericPlatformMemory::OnOutOfMemory should be broadcasting GetOutOfMemoryDelegate instead of GetMemoryTrimDelegate

Windows FMallocTBB seems to have a memory leak

The InsertFeaturePacksIntoINIFile() function creates an invalid entry in the DefaultGame.ini file

The GameProjectUtils::InsertFeaturePacksIntoINIFile() function is not creating a valid entry in the DefaultGame.ini file. It is currently missing a double-quote at the end of the PackSource value fo ...

Project fails to build when the SQLite Amalgamation files are included in the project.

In 4.20, it is no longer possible to add the SQLite Almagamation files to a project. Attempting to build a project with these files added results in the build failing due to numerous errors about pr ...

FTransform(ENoInit) ensures in Debug on mobile platforms

As of 4.20, ENABLE_NAN_DIAGNOSTIC is now enabled in all Debug configurations. However, this does not work well with the TransformNonVectorized that is used on platforms like android. If this combina ...