Assert message in TArray::CheckAddress is not appropriate for all situations

UE - Foundation - Core - Mar 21, 2017

The assert message in CheckAddress is as follows:"Attempting to add a container element (%p) which already comes from the container (%p, ArrayMax: %d, ArrayNum: %d, SizeofElement: %d)!" This assert ...

Spin Box delta does not appear to affect how the spin box increments through its values when clicking and dragging with the mouse

UE - Editor - UI Systems - May 12, 2017

Spin Box delta does not appear to affect how the spin box increments through its values when clicking and dragging with the mouse. The spin box appears to increment/decrement by more or less dependi ...

Blueprint inheritance can cause dangling references to stale UProperties across compiles

UE - Gameplay - Blueprint Compiler - Jun 6, 2017

A number of places in the code rely on raw UProperty pointers to track properties they care about. This can present issues when BPs inherit from other BPs, because the parent's class may be Purged / ...

Cannot debug code projects in the binary engine

UE - Foundation - Cpp Tools - UnrealBuildTool - Jun 6, 2017

Code projects in the binary version of 4.16.1 cannot be launched without the Editor in the debugger in Visual Studio. The project hits a breakpoint while launching, with the following showing in the ...

Fbx importer can import valid under 30Hz anim at 30Hz

Tools - Jul 17, 2017

The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...

Crash compiling blueprint referenced by Level Sequence while sequence is open

UE - Anim - Sequencer - Jul 19, 2017

Compiling a blueprint that is used in a sequence when the blueprint exists on a sublevel will cause a crash if the level sequence is currently open. ...

Face locked stereo layer becomes offset when using "Set Orientation and Position"

UE - Platform - XR - Sep 11, 2017

Face locked stereo layer becomes offset when using "Set Orientation and Position". When "Set Orientation and Position" is called the stereo layer becomes offset by the amount provided in the yaw (If ...

Async Load Primary Asset Class node fails in packaged build

UE - Gameplay - Sep 28, 2017

The Async Load Primary Asset Class node returns an invalid class for a packaged project. This does not occur in PIE / Standalone (calling the node does return the expected primary asset class) Reg ...

Hot reload iteration time regression.

UE - Foundation - Core - Oct 19, 2017

Hot reload iteration times have been crippled ever since CL# 3332960, which was a fix for [Link Removed]. ...

Quickly using alt-tab with a blueprint in a new window causes the event graph to capture input of the alt key

Tools - Nov 13, 2017

Quickly using alt-tab with a blueprint in a new window causes the event graph to capture input of the alt key. This issue does not occur when the blueprint is a tab of the main UE4 editor window. Th ...