Using Fixed Frame Rate Increases the Speed of Auto Save

UE - Foundation - Core - Oct 26, 2015

Using a lower fixed frame rate (i.e. 20fps) causes the auto save timer (when set to the default of 10) to count down in 3 seconds. Found in 4.10 Preview 2 CL 2733139. Reproduced in 4.9.2 binary an ...

Behavior Tree Decorator Not Aborting When Observer Aborts is Set in Behavior Tree

UE - AI - Jun 15, 2016

Behavior Tree Decorators are not aborting when observer aborts is set in the Behavior Tree. Setting Observer Aborts inside of the Decorator blueprint causes it to work as expected. Found in 4.12.2. ...

Blueprint Billboard Components render Opaque in Editor but Translucent during PIE

UE - Graphics Features - Jan 28, 2016

Billboard components render translucent during play, but render opaque within the editor. Simply adding a billboard as a component to a new actor blueprint and placing it in the level will reproduce ...

Unable to pass TMap or TSet as a parameter for a UFUNCTION

UE - Foundation - Core - Mar 2, 2017

Attempting to pass a TMap or TSet into a UFUNCTION as a parameter causes a compilation error. Removing the UFUNCTION declaration works. Error messages:2>D:\Unreal Projects\Main\MyProject14\Source\M ...

OnComponentBeginOverlap and EndOverlap are called multiple times when moving in a Skeletal Mesh component's collision

UE - Simulation - Physics - Jul 7, 2015

OnComponentBeginOverlap and EndOverlap are called multiple times when moving in a Skeletal Mesh component's collision. This does not occur with a Static Mesh's collision. Test project available her ...

Crash after Enabling Forward Shading on Mac and Creating/Editing Materials

UE - Graphics Features - Nov 18, 2016

A crash occurs after enabling 'Forward Shading' on Macs. The crash is triggered after creating a new material and attempting to modify that material. Regression? No, this crash also occurs in the 4 ...

Cannot Create a New Project if Windows Username Contains a Special Character

Tools - Oct 26, 2015

If you have a windows username with a special character (in this case, it was ^), the launcher will not allow you to create a new project, and a warning appears indicating that the path cannot conta ...

Landscape Creates Two Shadows with Baked Static/Stationary Lighting

UE - LD & Modeling - Terrain - Landscape - May 25, 2016

It appears two shadows are created when building static lighting for Landscapes. One seems to be offset while the other is accurate to the angle of the light source. I tested this in 4.9.2, 4.10.4, ...

Cannot pass a Dictionary through a Replicated Function

UE - Networking - Aug 23, 2018

When passing dictionary (map) variables through replicated (to server) functions, the value will not print out on the client. In 4.19.2 (CL-4033788) this caused a crash but in 4.20.2 (CL-4302132) an ...

Creating 3 player splitscreen causes viewport to go black on PIE

UE - Graphics Features - Feb 13, 2015

If a game is set to play with 3 player splitscreen, starting the came will cause the viewport to go completely black. Does not occur with 2/4 players. Does not occur in standalone ...