Unreal Engine Issues

After clearing the options of a ComboBox (String) widget it will not update

If a user uses clear options on a combo box (String) and then tries to add new and different data, the data that is added was the data that was removed with the clear options node. ...

Two-Sided Shadowing on Planes and Landscapes with non-flat Normals are Incorrectly Lit

When using a Two-Sided Material and Shadowing Two-Sided for a Plane or Landscape, with non-flat normals, there are parts of the material which are still illuminated. I have provided a test project ...

LIVE: Advanced Lighting Map (new default map in Release) has a Skybox the generates Error on Lighting Build

Opening the Advanced_Lighting Map, the new default map with 4.5.0 and 4.5.1, the Skybox has 4 UV Channels but all of them have overlapping UVs. WORKAROUND - You can Auto Generate UVs for the Skyb ...

Cmd+W and Cmd+Q Keybindings for Mac Both Close the Editor

While in the Editor with a Mac the user can press either Cmd+W or Cmd+Q to exit. The user on AnswerHub is reporting that the Cmd+W should close an active window or tab, where as the Cmd+Q keybinding ...

Editor Crashes when attempting to copy/paste nodes in Material Editor

UPDATE: 1/8/2015 Crash Reporter: [Link Removed] Callstack: <unknown module>! KERNELBASE!RaiseException() <unknown module>! UE4Editor_Core!FOutputDeviceWindowsError::Serialize() <unknown module> ...

Motion Blur Appears Exaggerated with Planar Reflection Actor in Level and Accurate Velocities Setting Enabled

Motion blur seems exaggerated with a Planar Reflection Actor placed in the Level and the Support Accurate Velocities from Vertex Deformation setting enabled. I am assuming this is happening becaus ...

Static Meshes Disappear with Media Player Asset Applied as Material in Standalone or Packaged Game

Static Meshes with a Media Texture applied will disappear when played in Standalone or in a Packaged Game. Regression? Yes, this is not the same behavior in the 4.11 version of the engine. Note I ...

Multiplayer Shootout is broken in 4.12

Multiplayer Shootout is broken in 4.12. Appears to be caused by the AimOffset animations being imported at the incorrect scale. Regression: Yes, does not occur if you create a 4.11 version of the ...

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Particle System Warmup Time causing Crash with Light Module and High Quality Lights

A crash occurs when Opening a level with a Particle System that contains a warmup time and a Light module with High Quality Lights checked. This crash seems very isolated and specific as it does no ...