RepLayout can hold onto hard references to owning objects, preventing them from being destroyed.

Networking - Feb 28, 2019

RepLayouts are associated with an Owning Object, which may be a Class, Function, or Struct. RepLayouts will only be cleaned up when the Owning Object is no longer valid. RepLayouts hold references t ...

Far Shadow Cascades fade out based on the length of the Distance Field Shadows

Rendering - Mar 14, 2019

Far Shadow Cascades are fading out based on the length of the Distance Field Shadows. Causing the shadows to cut out abruptly. ...

Crash on attempt to clear(NullifyInstance) of duplicated Hierachial Instanced Static Mesh

Tools - May 31, 2019

When creating an C++ Actor with a Hierarchical Instanced Static mesh. when duplicating such an actor with mesh instances, the instances are not visible on the level. In this state, calling HISM comp ...

Color obtained in Retainer Box differs from color visible in material preview when set by Vector Parameter

Rendering - Aug 12, 2019

Color set by Vector Parameters in a material differs in preview from color obtained in retainer box. Obtained color does not match either sRGB or Linear values of color visible in material preview. ...

Crash when changing the World Grid Material to Unlit

Rendering - Mar 13, 2017

A crash occurs when setting the WorldGridMaterial from the Engine Content to the Unlit Shading Model and pressing apply. ...

Unable to edit default values of TMap struct variable stored in an inherited component from the full blueprint editor

Gameplay - Blueprint Editor - Jun 29, 2017

When you have a struct variable that is part of a TMap which is stored in an inherited component, the struct is not editable in the full blueprint editor. It is editable in the data only blueprint e ...

Rotating Movement Component stops at pitch of exactly 90 or -90

Gameplay - Apr 30, 2018

When you set the rotation rate of a Rotating Component so that the moved actor reaches exactly 90 or -90 pitch, it stops rotating for a few seconds. ...

Levels Panel "Move To" function does not move level to desired location

Tools - Jun 6, 2018

Levels Panel "Move To" function will not move level to the desired location. The menu will stay open and do nothing when you try to move it.  Found in 4.18 CL# 3832480,  4.19 CL# 4033788, 4.20 Prev ...

[Landscape] only returns DefaultPhysicalMaterial when run in editor world

Tools - Landscape - Jun 19, 2018

Landscape will only return "DefaultPhysicalMaterial" when run in editor world. In game time it will return the proper physical material. Found in 4.19 CL# 4033788, 4.20 Preview 3 CL# 4135216 , 4.21 ...

Renaming parent invalidates childs hierarchy

Gameplay - Components - Jun 22, 2018

When renaming the Parent of a Child Blueprint it invalidates the hierarchy of the Child Blueprint and nests its components under the DefaultSceneRoot. This bug was reported in 4.19.2 (CL-4033788) a ...