It will cause a crash if a level remove from world failed

UE - World Creation - Worldbuilding Tools - World Composition - Apr 21, 2019

Properties of placed-in-map actor instances may not replicate if their default has been edited

UE - Networking - Mar 26, 2019

If the default value of a replicated property is edited on an instance of a placed-in-map actor, then on the server is value is changed back to the default, a client who joins in progress after this ...

Duplicate the mesh will not duplicate the foliage on it.

UE - World Creation - Worldbuilding Tools - Foliage - Mar 22, 2019

Integer Blueprint variables reset the Bitmask Enum setting when the Editor closes

UE - Gameplay - Blueprint - Feb 28, 2019

User created Bitmask flag Enumerators are not correctly stored and retrieved from Blueprint Integer variable settings. When the Editor is restarted the value of the Integer's Bitmask Enum is set to ...

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

UE - 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 RepLayouts will only be cleaned up when the Owning Object is no longer valid.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 ...

Foliage LOD's Screen Size Can't be Set Higher Than 1.5

UE - World Creation - Worldbuilding Tools - Foliage - Jan 31, 2019

Foliage LOD's Screen Size Can't be Set Higher Than 1.5 Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4827620, 5.1 CL 20024840 ...

ApplyLimits AnimGraph Node has incorrect functionality

UE - Anim - Rigging - Nov 8, 2018

In AnimNode_ApplyLimits.cpp the inputs for the ConstrainAngularRange function are going to the wrong rotator values. The XYZ of the node's input vec3 is being stored in YPR of the clamped rotator, w ...

Complex Landscape Collision is always used

UE - LD & Modeling - Terrain - Landscape - Oct 24, 2018

For landscapes, both the simple and complex collision are used when simulated against.  ...

Inconsistent Blueprint Instance Physics/Collision edit-ability

UE - Simulation - Physics - Oct 9, 2018

For Blueprints with components having collision, the collision profile set in the blueprint seems to determine the edit-ability of many collision/physics properties of the instances. The profiles ef ...

Navigating the Editor on Linux with a Wacom Tablet is difficult

UE - Platform - Linux - Sep 17, 2018

Movement is quite sporadic and jumpy when using a Wacom Tablet to navigate the Editor on Linux. The Editor pans and zooms in and out really quickly with the slightest of movements. This was report ...