Unreal Engine Issues

Missing logging or error when applying an anim instance to a skeleton that the anim instance doesn't match.

Currently, we detect whether an anim instance is supported by the skeletal mesh and, if it isn't, unreference the instance, but we don't error or warn the user that this happened. This leads to conf ...

Slate Post Buffer does not work correctly when changing Default Back Buffer Pixel Format

tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out

When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...

Subobject ComponentClass overrides cause failing assertions due to UObject reconstruction on AsyncLoadingThread

Context The blueprint editor allows you to override an actor component's class in derived blueprints (component details panel -> Component Class). [Image Removed] Problem When a blueprint and it ...

Blueprint diffing tool attempts to diff transient properties

The Blueprint diffing tool should skip transient properties. ...

Pointer being freed was not allocated on IOS with MallocBinned2

Slack thread [Link Removed] Probably related to the same issue seen on Android, explained here: [Link Removed] ...

COTF has issues with out-of-source projects

It is expected that cooking, including COTF, will fix-up all string asset references. There were a few reasons this wasn't happening, but we should get these fixes into 4.15 as the impact was worst ...

Trigger Montage Ended Event results in Unhanded Exception

TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround:   Add a Delay node befo ...

Updating project modules causes custom blueprints to lose reference to parent class

When changing the name of a module or creating a new module, updating the _API of a class to the new module will cause blueprints based on this class to lose reference ...

Illegal reference to private object when cooking a child level sequence with a time warp track

Slack: [Link Removed] Another Slack: [Link Removed] Cook error:UATHelper: Cooking (Windows): LogSavePackage: Warning: UATHelper: Cooking (Windows): Referencers of MovieSceneTimeWarpSection /Gam ...