The import option for Remove Degenerates will disable material collision checkbox

UE - Editor - Content Pipeline - Import and Export - Jan 17, 2017

When you disable the import option for Remove Degenerates the checkbox under the materials for "Enable Collision" will be disabled. This only matters if per-poly collision is being used for the mesh ...

Shadows of small movable components popping out

UE - Graphics Features - Jan 19, 2017

This must be a regression ...

Crash when adding sphere reflection capture to a scene

UE - Graphics Features - Jan 30, 2017

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 ...

Impossible to reparent blueprint class that has a broken parent class when using compilation manager

UE - Gameplay - Blueprint Compiler - Dec 8, 2017

Alternatively use BP_ParentClassIsMissingType in QAGame ...

The CanLaunchURL() function does not do what it seems to imply that it does

UE - Foundation - Core - Jan 15, 2018

The CanLaunchURL() function seems like it would check the provided URL to make sure it is valid. The comment for the function in GenericPlatformProcess.h appears to imply that this is what the funct ...

Blueprint EventDispatchers unable to be reordered

UE - Gameplay - Blueprint Editor - Feb 15, 2018

UI appears to support EventDispatcher reordering, however reordering does not occur. ...

Memory Leak when Debugging Blueprint

UE - Rendering Architecture - RHI - May 2, 2018

RAM usage continually increases when debugger is active https://answers.unrealengine.com/questions/784443/ue-4191-memory-leak-while-using-blueprint-debugger.html ...

UMG Widget Set Focus in Standalone broken

UE - Editor - UI Systems - Aug 7, 2018

Focus is no longer set on UMG 3D Widget when playing in Standalone. (PIE works in both versions) Also verified in Main CL# 4247867 ...

Unable to rename Blueprint Custom Events Input Parameter to: "NEWPARAM"

UE - Gameplay - Oct 12, 2018

In an Actor blueprint, creating a custom event with an input parameter and renaming said parameter to "NEWPARAM" will not rename the parameter. Note: Renaming the parameter to another name, and t ...

IAP fails (in-game) on iOS Match3

UE - Online - Aug 28, 2018

The device this was tested on is 4987_iPhone 6+_11.2 The live build didn't provide UE4 logging, but that will be added. There is also a failure to purchase on Android but it gets farther than this ...