Adjusting properties of a Blueprint instance's components in the level does not update references to the properties in the BP's Construction Script

Gameplay - Components - Oct 6, 2015

Adjusting properties of a Blueprint instance's components in the level does not update references to the properties in the BP's Construction Script. Note: this would work in 4.8.3. Reproduced in 4. ...

Crash when hot reloading after adding HISM Component class

DevTools - Hot Reload - May 15, 2017

After adding a class based on "Hierarchical Instanced Static Mesh Component", any attempt to hot reload, from Visual Studio or within the editor, causes the editor to crash. Regression: No - crash ...

Photorealistic Character sample's hair has broken dithered opacity mask

Rendering - Aug 14, 2017

In the 4.17 release, there was blocky dithered opacity mask artifacts on low opacity pixels. ...

Blueprinted class fails to instance private objects if the hosting subobject's class inherits an instanced variable

Gameplay - Blueprint - Feb 21, 2018

Blueprints that contain an instanced private object that is nested under an instanced subobject and the defaults of that blueprint are set up using EditInLineNew, any instances of the blueprint will ...

Event Possessed fires twice

Gameplay - Blueprint - Jul 31, 2017

Event Possessed fires twice even if unpossessed is not called ...

(Paper2D) Polygon Collision does not correctly rebuild when using rebuild collision node in packaged game

Gameplay - Paper2D - Nov 29, 2017

With tile maps, Polygon Collision does not correctly rebuild when using rebuild collision node in packaged game. This issue does not appear to be a regression. Versions Tested: Issue occurs on all ...

Crash when moving landscape that contains landscape spline to sub-level

Tools - Landscape - Aug 4, 2017

Crash when moving landscape that contains a landscape spline to another sub-level. User Description: The Editor crashes on copy and pasting a landscape spline over to another Level. Always rememb ...

[CrashReport] UBlueprintGeneratedClass::AddReferencedObjectsInUbergraphFrame()

Gameplay - Blueprint - Nov 2, 2017

This is a common engine crash that has occurred since at least 4.16. Users have not provided any useful descriptions of their actions when the crash occurred. The callstack shares some similaritie ...

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 ...

[CrashReport] UE4Editor_D3D11RHI!VerifyD3D11CreateTextureResult() [d3d11util.cpp:276]

Rendering - Mar 30, 2017

This crash seems to be related to or a continuation of [Link Removed], where that specific CrashGroup stopped receiving new crashes after the 4.10 release. This one has occurred from 4.13 - 4.15 (s ...