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 RepLayouts will only be cleaned up when the Owning Object is no longer valid.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

nDisplay - DeprojectScreenToWorld alignment is off

UE - Virtual Production - nDisplay - Dec 3, 2018

Using nDisplay DeprojectScreenToWorld does not have proper alignment when clicking on the screen.  [Link Removed] ...

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 - Graphics Tools - 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 ...

Snap to Bone only updates the UI in the PHat Editor - Constraints still modified when simulated

UE - Simulation - Physics - Oct 9, 2018

Even though the constraint appears to be snapped to the bone in the Editor, when it simulates, the skeletal mesh behaves like it was pulled apart I noticed this while verifying [Link Removed]. Even ...

The results of Roughness=1.0 from a constant and from a parameter are different on 4.20.

UE - Graphics Features - Sep 4, 2018

The results of Roughness=1.0 from a constant and from a parameter are different on 4.20. The static bool switch of the following material always returns 1.0. But the results are different.[Link Rem ...

LandscapeStreamingProxy do not properly save z offset from world composition, level property.

UE - World Creation - Worldbuilding Tools - World Composition - Aug 21, 2018

LandscapeStreamingProxy seems not properly saving z offset from level details when using world composition. It is reset to 0 when reopening the project. z position value from level details is saved. ...

Root Motion interpolation is incorrect when use URO

UE - Anim - Runtime - Aug 3, 2018

According to Licensee's report, Root motion is incorrect when use URO. I Investigated, in the case of "Montages Only" become TrailMode in URO. Normally Animation Interpolation has implementation, ...