Passing an FQuat over a network will crash a game unless it is set as a variable first.

UE - Networking - Jan 6, 2015

A user reported that retrieving and sending an FQuat over a network will crash a game unless the FQuat is first assigned to a variable and the variable is passed. ...

Performing a Hot Reload after changing a custom component code class can make the component unusable in Blueprints, or crash the Editor.

UE - Gameplay - Blueprint - Feb 19, 2015

Performing a Hot Reload after altering a custom component code class can make the component unusable in Blueprints, and even crash the Editor. WORKAROUND: Close and re-open the Editor. ...

Post processing rendering artifacts Nexus 6

UE - Platform - Mobile - Dec 3, 2015

When you push a mobile targeted project to the Nexus 6, the rendering is all sorts of wrong. When you hover over to where the items are, the screen goes black. There is also a large black or cyan sp ...

Sync'ing an asset through the editor does not update the asset until the project restarts

If an asset file is checked out / edited in source control and checked back in, others will see the yellow exclamation mark to indicate that there is an update to the asset but choosing to sync does ...

Changing WITH_SUPSTEPPING prevents 4.10 from compiling

UE - Simulation - Physics - Nov 24, 2015

In the file EngineDefines.h, changing 37 to read "#define WITH_SUBSTEPPING 0" will cause the solution to fail the build process. ...

Attempting to package 4.10 project prompts user to install VS2013 rather than VS2015

Tools - Dec 17, 2015

When attempting to package a 4.10 project, if VS2015 is not installed an error window prompts the user to install VS2013. Image of error message shown in AH URL. This has not been reproduced inter ...

Translucent Materials no longer reflect light when using Forward Lighting variable

UE - Graphics Features - Jun 7, 2016

Translucent materials are no longer showing light reflections in scene when using r.forwardlighting 1 with lights. This is a regression from functionality in 4.11.2. This no longer works with 4.12 ...

Code delegates duplicate function calls when owning actor is duplicated in the editor

UE - Foundation - Core - Jan 15, 2016

If an actor that contains a delegate bound in code is duplicated after being placed in the level, the delegate for the duplicate will also trigger the delegate for the original as well. ...

4.6 Delegate error in Blueprints

UE - Gameplay - Blueprint - Dec 12, 2014

When looking into the bd_hud_scoring and bd_rules_maze blueprints in the users project (Provided below), there are nodes that are throwing errors. If you press compile, the errors go away and the co ...