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, ...

If landscape was rotated, Ramp tool does not work properly

UE - LD & Modeling - Terrain - Landscape - Aug 15, 2018

If landscape was rotated, Ramp tool does not work properly. In particular, the debug display is not working properly.It is tilted diagonally. ...

Collision preset setting is not reflected correctly in case of original class inheriting Primitive Component

UE - Simulation - Physics - Aug 15, 2018

Collision preset setting is not reflected correctly in case of original class inheriting Primitive Component. Probably the cause is UPrimitiveComponent :: PostLoad (). Since FCollisionResponse :: U ...

RecastNavMesh is not generated at loaded sublevel

UE - AI - Aug 16, 2018

RecastNavMesh is not generated at the sub level dynamically added in C ++ in 4.20. In 4.18, 4.19 it was generated normally. Probably, changes to the large number about NavMesh systems from 4.19 to ...

"Enabled per poly collision" under "Support compute skincache" is ON causes a crash at runtime

UE - Simulation - Physics - Aug 16, 2018

It seems that "Enabled per poly collision" with "Support compute skincache" causes a crash at runtime immediately. We can easily reproduce it with ContentExample. The logs at the crash timing... L ...

Cloth simulation doesn't work correctly if Compute Skin Cache is ON.

UE - Simulation - Physics - Character - Aug 16, 2018

It seems that cloth simulation doesn't work correctly on 4.20 if Compute Skin Cache is ON. We can easily repro it with Content Example [Link Removed] Is this by design? ...

Preview Mesh for Skeleton/Animation can't be saved correctly

OLD - Anim - Aug 23, 2018

It seems that preview meshes of Skeleton/Animation can't be saved correctly. I had changed a preview mesh and had saved it, but after reopening the project, the setting was ignored and the preview ...

BP nativization can generate an invalid path including "__TEMP_BP__"

UE - Gameplay - Blueprint Compiler - Aug 27, 2018

The licensee sent us a BP that can't be nativized correctly on UDN. The nativized BP has wrong paths and causes a crash. ...

Instance Static Mesh instance doubles when upgrading from 4.18 to 4.19 or higher

UE - World Creation - Worldbuilding Tools - Foliage - Sep 4, 2018

Instance Static Mesh instance doubles when upgrading from 4.18 to 4.19 or higher. According to Licensee, manual check is difficult. ...

If user set ChunkID to a higher value, UpdateManagementDatabase will be very slow

UE - Gameplay - Sep 4, 2018

If user set ChunkID to a high value, the construction process of the database managed by AssetMAnager becomes very long. The cause is the following code in UChunkDependencyInfo :: BuildChunkDepende ...