Attempting to open a map in content browser that is currently loaded in world composition browser crashes editor

Tools - May 12, 2015

Attempting to open a map through the content browser will crash the editor if that map is opened as a sublevel or the currently opened map through the world composition browser. Frequency: 2/2 Cr ...

Splitting transform pins on add component nodes creates an additional transform pin when duplicated

UE - Gameplay - Blueprint - May 28, 2015

If an add component node is duplicated after the transform pin has been split, it will create an additional transform pin and keep the original split variables. ...

Animtation Starter Pack: Character does not animate correctly moving Forward/Left or Backward/Right

Docs - Samples - Jul 30, 2015

In the Animation Starter Pack, if you hold down W+A simultaneosly to move Forward/Left OR S+D to move Backward/Right, the character does not face the proper direction and will appear to "slide" acro ...

Video Texture thumbnail does not update after you change its output track

Media Framework - Mar 2, 2017

When updating a video texture's output track, the player preview and world will update immediately, however the texture's thumbnail will revert to default color: Black. When moused over, the thumbn ...

Drop down menus clip on 27" Screen iMacs

UE - Platform - Apple - Mar 17, 2017

Drop down menus clip on 27" Screen iMacs (See attached images.) Reported from a 27" iMac and tested on a 27" iMac here. Other models may be affected. *Image with Blue circled areas are from the use ...

uncaught exception: out of memory after launching project onto HTML5 (32-bit browsers)

UE - Platform - Mobile - Mar 20, 2017

First person template project is struggling to run on Firefox 32-bit Version 52.0.1 and eventually throws an "uncaught exception: out of memory" error. Occurs in both BP and C++ projects. May be a ...

Draw as Border is not limited to sprite area in UMG

UE - Editor - UI Systems - Apr 14, 2017

UMG supports sprite as an image, but using this as source do not correctly cut sprite's region which limits border textures to be separated textures. If the Image has a material, size do not match ...

Switch on Gameplay Tag Container node does not compile

UE - Gameplay - Blueprint - Jun 9, 2017

It looks like the Switch On Gameplay Tag Container node stopped working in 4.15. The Switch On Gameplay Tag works fine. ...

MaterialInstance ScalarParameter's desc can not upadate.

UE - Rendering - Architecture - Materials - Jul 19, 2017

When this problem occurs, "MaterialExpression" is null in FMaterialInstanceParameterDetails::GetParameterExpressionDescription. ...

[CrashReport] Mac crash - FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState

UE - Rendering - Architecture - RHI - Aug 25, 2017

This is an infrequent Mac crash that has been affecting users since at least 4.15. Users have not provided any descriptions of their actions when the crash occurred. The callstack is similar to the ...