Unreal Engine Issues

Animation Interpolation will not occur if the Evaluation Rate is set at the same value as skipped frames

When an animation is skipping frames, interpolation will not occur if the Max Evaluation Rate is set to the same number as the number of frames being skipped (or 1 frame higher). The Eval Rate will ...

Rare crash occurs in CoreAudio in Vehicle Game on Mac when quitting.

This is a very rare crash that I encountered in Vehicle Game and so far have not been able to reproduce, however checking the crash history it has been seen before in the wild. This issue may be re ...

Lighting is unbuilt after reloading a level that has a actor with static mesh components

For a specific level with a simple BP actor that contains multiple static mesh components, lighting gets unbuilt after reloading the level, even when there is no change in the level. "LogStaticMesh ...

Spectator Pawn cannot be added to level by dragging into viewport

Spectator Pawn cannot be added to level by dragging into viewport but can be added by using place actor in the level viewport. Regression: This issue occurs in 4.13.2, 4.14.3, and 4.15.1 of the Bin ...

Packaging a Project With Nativize Blueprints Enabled Fails With Setter for an Array of Classes

Packaging failure occurs with nativize blueprints enabled when you have an array of classes and you try to set it with an array from an instance of a native C++ class. Found in 4.15.1. Reproduced i ...

Crash occurs while clicking through the Landscape Overview Tutorial

Crash occurs while progressing through the Landscape Overview tutorial, after the step "After pressing the Create Button, your level should now have a Landscape Actor inside of it" This is a regres ...

Fill tool does not work on BSP

 The fill bucket tool under foliage does not work with BSP surfaces. ...

WorldContextObject is null in BP function library

Set All Bodies Below Simulate Physics Only Causes Ragdoll Effect if it is Set to Root Bone

-This functions in 4.16 -Physics will only simulate if the Third Person Character bone name variable is set to root -Physics does not affect any other bone -Make sure to plug in set in collision f ...

Unknown by landscape material warning logspam when launching onto Android/HTML5/iOS/tvOS

Unknown by landscape material warning logspam when launching onto Android Also occurs in Main @ CL 3792526 --Reproduces in //UE4/Release-4.18 at CL 3792614 --Reproduces in //UE4/Release-4.18(.1) at ...