Unreal Engine Issues

Significant Frame Rate Drop When Multiple Persona Windows Docked in the Background

Windows: Opening a persona window causes the editor to lose approximately 10fps per window (4 persona windows open = -40fps) Even when docked and running in the background. Mac: Opening a persona w ...

Wildcard Array in Macro Causes Error Message to Appear

Creating a Macro with a Wildcard Array and then using that macro to accept an array as input and attempting to get the first element causes an error to appear in the output log. In the AnswerHub u ...

Differences in Auto-Exposure between Editor PIE and Packaged Build for VR

A licensee is reporting a difference in auto-exposure brightness levels between PIE and a Packaged project. He is working in VR, but since I was not able to reproduce the issue on my end it is hard ...

Crash when adding sphere reflection capture to a scene

An occasional crash occurs when adding a sphere reflection capture to the scene from the place mode panel. This issue has a low repro, but has been seen a couple times. Repro rate seems to be around ...

Draw at desired size does not return to being false when unchecked

When setting "draw at desired size" for a widget component to true, the "Draw size" will no longer respond to input. ...

Shortcut(Function, Add a new function graph) leads to crash in the MacroLibrary editor.

Shortcut will still led to create a new function in the macro library. and this makes engine crash with following callstack. Assertion failed: Blueprint->BlueprintType != BPTYPE_MacroLibrary [Link ...

Cannot find source code error when doubleclicking blueprint nodes to see it in the code.

The launcher version engine cannot find *.inl file from installed location (i.e. in my case it is located at D:\Launcher\UE_4.19\Engine\Source\Runtime\Engine\Classes\Kismet\KismetMathLibrary.inl) an ...

Memory Leak during video playback when main thread blocks

Video frames are stored in a queue that keeps growing until the main thread ticks again. Can also be reproduced by playing video then clicking the import file button and leaving the file import dial ...

Grass on landscape Component was messed up when painting blend mask if this component has LODBias>0

Changing setting in RecastNavMesh breaks "reference" to NavMeshBoundsVolume

When you create a NavMeshBoundsVolume, it automatically creates a RecastNavMesh-Default. You can change the settings of the nav mesh there. However when you change settings of this RecastNavMesh it ...