Crash When Toggling Visibility of Level with Planar Reflection

UE - LD & Modeling - Terrain - Landscape - Mar 26, 2018

This crash occurs in 4.19 and 4.20 but not 4.18. Repro'd in 4.19.0-3944462 and 4.20.0-3955769 and 3964322. This is a regression. Per UDN licensee: When I'm showing/hiding levels in editor (in le ...

Editor will crash while instancing nested AIPerception component template subobjects in an AIController-based Blueprint class during compile-on-load.

UE - Gameplay - Blueprint - Mar 23, 2018

User report of an assertion that fires on editor reload during an attempt to reload an AIController-based Blueprint class with a dependency on a child Blueprint class, both created in a previous edi ...

Merging negative-scaled actors breaks materials

UE - World Creation - Worldbuilding Tools - HLOD - Mar 27, 2018

Materials are broken when merging a mesh with another that has negative scale Licencee states that bisMirrored in FMeshMergeHelpers::TransformRawMeshVertexData seems to be involved. Does not occur ...

Incorrect macro definitions in VisualLogger.h

UE - Gameplay - Mar 28, 2018

UE_CVLOG_BOX, UE_CVLOG_OBOX, and UE_CVLOG_CONE have problems with their definitions. UE_CVLOG_OBOX calls UE_VLOG_BOX instead of UE_VLOG_OBOX All 3 of these macros also call their respective macro ...

Leap motion hands stop tracking after regenerating skeleton

UE - Platform - XR - Mar 29, 2018

Leap motion hands stop tracking after regenerating skeleton. When opening the asset "hands_lo" the user is confronted with a message that reads "The preview mesh hierarchy doesn't match with the ske ...

Retainer box does not appear to respect the clipping settings for its contents

UE - Editor - UI Systems - Apr 2, 2018

When placing a widget in a retainer box that has the clipping setting "Clip To Bounds - Without Intersecting" the retainer box ignores the clipping setting and clips the widget anyway. ...

Unnecessary warning when deleting a Blueprint from a level when that Blueprint contains a reference to itself

Tools - Apr 3, 2018

When trying to delete a Blueprint from a level, if the Blueprint contains a reference to itself, and that is the only reference to that particular Blueprint, a warning will be displayed saying that ...

TSoftObjectPtr instance loses reference after ClientTravel

UE - Gameplay - Apr 3, 2018

If a TSoftObjectPtr on an instance has a reference to another instance in a level, that reference will be lost when a client travel is performed to travel to that level. Regression?: No This occurr ...

Absolute World Position in PP Material Returns Incorrect Values if r.ScreenPercentage is different from 100

UE - Graphics Features - Apr 3, 2018

Unable to repro in new project, so attaching sample project provided by licensee: When r.screenpercentage is different from 100 (50 or 150 for example), the absolute world position in a post-proces ...

Cannot build Blueprint Function Library plugin for Mac and iOS

UE - Platform - Mobile - Apr 5, 2018

Trying to Build a Blueprint Function Library plugin for Mac and IOS fails for IOS. The error message indicates that it is looking for the UE4Game file, but it appears to be looking in the wrong fold ...