Actor reference in actor component is cleared after the containing actor is compiled

Gameplay - Blueprint - Dec 19, 2017

A variable with an actor reference that is owned by an actor component will lose it's reference if the actor that it is applied to is compiled.  ...

Unable to bind events to OnPerceptionUpdated in Blueprints

Gameplay - Blueprint - Dec 18, 2017

Attempting to bind an event to OnPerceptionUpdated results in an error in Blueprints. It seems that this is caused by the TArray in the function signature not being a constant reference. Current co ...

GameplayTagContainers can cause a crash in packaged builds when Event Driven Loading is enabled

Gameplay - Dec 15, 2017

A user has reported that using a GameplayTagContainer can cause a packaged build to crash when EDL is enabled in certain cases. In this case, if the base C++ class that includes this GameplayTagCont ...

Default value for BP struct within BP struct not set

Gameplay - Blueprint - Dec 15, 2017

If I set a certain default value for a struct within another struct, it is reset to "None" and the value is not accepted. Below are detailed steps to reproduce as well as a minimal project. Source: ...

[CrashReport] UE4Editor_SlateCore!SWidget::ExecuteActiveTimers() [swidget.cpp:986]

Tools - Material Editor - Dec 15, 2017

User comments:right mouse button in material editor made engine crash....becomes slow and crash....64gb ram, 2 xeon and gtx690....need to restart computer to everything works fine. need a solution t ...

[CrashReport] UE4Editor_ShaderCore!BuildShaderFileToUniformBufferMap() [shadercore.cpp:750]

Rendering - Dec 15, 2017

User comment:enabled composure and i get a hard-crash now Not seeing any vanilla builds in crash report, looks like source builds. ...

The iOS app icons settings are not being used on Mac

Platform - Mobile - Dec 14, 2017

This issue did not occur on Windows at the same CL. This was originally being tracked by UE-51879 but after initially testing the fix for that JIRA, this particular issue persisted and it was deter ...

Possible incorrect pointer manipulation in BeginPackageCacheForCookedPlatformData

Core - Cooker - Dec 12, 2017

In UCookOnTheFlyServer::BeginPackageCacheForCookedPlatformData(), there is a pointer to int32 called CurrentAsyncCache that is used as an index. It's value is dereferenced before it is checked, but ...

Blueprint compilation error regarding actor component

Gameplay - Dec 11, 2017

Blueprint actor has an error in the event dispatcher node. The error states that the node is out of date and needs to be refreshed. Pressing the compile button will removed the error but when the pr ...

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

Gameplay - Blueprint Compiler - Dec 8, 2017

Alternatively use BP_ParentClassIsMissingType in QAGame ...