Editor Shortcuts stop working if the editor is launched with a non-Latin-based language

Tools - Nov 4, 2019

Editor shortcuts will not work if you launch the editor with a non-Latin-based language (ex. Russian, Chinese).  The editor must be closed and restarted with English (or possibly any Latin alphabet- ...

FMatrix::ErrorEnsure(const TCHAR* Message) doesn't output TCHAR parameter

Core - Oct 30, 2019

FMatrix::ErrorEnsure(const TCHAR* Message) doesn't output the message passed to it.  Found in 4.23 CL#9631420 Reproduced in 4.22.3 CL#7053642, 4.24.0 CL#9892386, 4.25 Main CL#9892271 ...

Vehicles with at least one kinematic collision do not function anymore

Physics - Oct 30, 2019

Using at least one source of kinematic collision on a vehicle causes animations or movement to not function any longer. This issue persists on child bones and collisions as well. Users are unable to ...

IsDrive node returns unexpected bool

Core - Oct 30, 2019

InputOutputEmptytrueC:/falseC:trueK: (not a drive or volume on my pc)trueDATA (name of my D drive)false Confirmed in MAIN @ CL 9888595 ...

Getting Fullscreen or Windowed Resolutions doesn't fully execute on Linux

Platform - Linux - Oct 28, 2019

When using "Get Supported Fullscreen Resolutions" and "Get Supported Windowed Resolutions" on Linux, no values are printed out. Using the same logic on Windows and Mac produces a list of supported r ...

Imported TTF fonts rendering unknown glyphs for common characters

Tools - Oct 28, 2019

Imported TTF fonts rendering unknown glyph for previously-working characters such as ' or ! or , or ?. In 4.21 the font was working as expected. User states that custom fonts should be forward-compa ...

Skylight mobility settings interfere with Ray Tracing accuracy

Rendering - Ray Tracing - Oct 28, 2019

When skylight raytracing is enabled, and skylight mobility is movable, skylight diffuse convolution is used on top of the skylight diffuse raytracing, causing severe bias and incorrect raytraced res ...

Multiple Planar Reflections are not captured when forward shading

Rendering - Oct 25, 2019

After enabling forward shading, having two planar reflections in the scene causes one instance to not render properly. Tested in 4.22.3 (CL - 7053647), 4.23.1 (CL - 9631420), 4.24 (CL - 9828119), 4 ...

Mobile Preview -> AutoLandscape Material broken if created in 4.22+

Platform - Mobile - Oct 25, 2019

Landscape Layers created in 4.22+ revert to default material in Mobile Preview. Confirmed in MAIN at CL 9730599 ...

Async loading fails because AssetManager's bHasBlueprintClasses does not consider WidgetBlueprint

Tools - UMG - Oct 25, 2019

When bHasBlueprintClasses of AssetManager is enabled, WidgetBlueprint is not included in ClassName of ARFilter. Therefore, asynchronous loading using AssetManager of the UUserWidget inheritance clas ...