Move Directly Toward Not Working Without NavMesh

Gameplay - AI - May 18, 2016

The Move Directly Toward task does not seem to be working without a Nav Mesh in the level. Based on the tooltip "moves directly to the target without regard to any navigation system", it is expected ...

Significant Performance Drop During Play While Behavior Tree is Open

Gameplay - AI - May 18, 2016

Attempting to play in editor, standalone, or VR Preview when a behavior tree that is running is open will cause a significant performance decrease. The framerate drops from ~120 to ~80 fps while the ...

Warning: Failed to find object 'Object /Engine/Tutorial/SubEditors/PersonaAnimEditorTutorial.PersonaAnimEditorTutorial_C'

Docs - May 18, 2016

The following error has occurred in packaging logs for UE4.11 and UE4.12Preview: LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Engine/Tutorial/SubEditors/PersonaAnimEd ...

Crash Importing Skeletal Mesh LODs with a lot of morph targets

Anim - Animation - May 18, 2016

Crash Importing Skeletal Mesh LODs with a lot of morph targets Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 785] Array index out of bounds: 2 from an ar ...

FMultiReaderSingleWriterGT isn't thread safe

Core - May 17, 2016

From https://udn.unrealengine.com/questions/292741/fmultireadersinglewritergt-isnt-thread-safe.html: I've found that FMultiReaderSingleWriterGT has at least 2 bugs: The one that caused a deadlock ...

Renaming Blackboard Key Not Updating Behavior Tree References

Gameplay - AI - May 17, 2016

When renaming a blackboard key using the Entry Name box in the key's details panel, the names of the references in the behavior tree are not updated automatically. This is inconsistent behavior be ...

Attempting to Paste Behavior Tree Task with Decorators Pastes to Wrong Location

Gameplay - AI - May 17, 2016

Attempting to paste a task that contains decorators does not paste it near the mouse location, and pastes it off screen instead. Found in 4.11.2 binary. Reproduced in 4.12 Preview 4 binary and Main ...

Dot Product Normalization does not produce consistent results

Rendering - May 17, 2016

When using a Normalize node and then trying to get the Dot Product vs setting the Dot Product up manually do not produce the same results. ...

[CrashReport] UE4Editor_Foliage!FFoliageInstanceBaseCache::AddInstanceBaseId() [foliageinstancebase.cpp:101]

Tools - Foliage - May 17, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: InstanceBaseMap.Num() == InstanceBaseInvMap.Num() [Link Remo ...

Folders deleted inside of the Content Browser do not actually get deleted

Tools - Content Browser - May 13, 2016

A user reported an issue where folders are never actually deleted when they are deleted via the Content Browser. They return when reopening the editor and never disappear from the File Explorer. ...