Unreal Engine Issues

Significant editor slowdowns when moving blueprinted actors while having a different complex blueprint open

A Blueprinted actor's construction script time can be affected by the complexity of an opened level Blueprint. ...

IKRetargeting Skeletal Mesh Does Not Update Virtual Bones

Occurs 5/5 times. Regression does not occur: UE5Manny Skeletons are new to UE5.0  ...

Sky renders black after building lighting in VR Template

Regression: Tested in UE5/Release-5.0 at CL 20979098, this issue does not occur so this is a regression. ...

Local Vector variables in functions do not save the Y and Z values

Local Vector variables in functions do not save the Y and Z values. Possibly connected: after entering the X value, pressing Tab does not move to the Y value. Tabbing from there works as expected. ...

Alembic Importer does not import the correct amount of curves when using the Minimum Number Of Vertex Influence Percentage setting

This is a regression from 4.14.2 ...

AreaFlags Empty During First PIE Session After Hot Reloading

AreaID always seems to be empty during the first PIE session after hot-reloading. Only able to test in Dev-Framework CL# 3221683 due to the licensee's project being created in 4.15 and not being b ...

Creating a float variable named lifespan in an Actor Blueprint and setting its default value will override the life span of the parent class

Creating a float variable named lifespan in an Actor Blueprint and setting a default value for it will override the parent class' life span setting. I was unable to find any variable in the Actor cl ...

Curves in compressed additive animations interpolate incorrectly when two keys in a row have the same value

Curves compressed from additive animations will not interpolate correctly if they have two keys in a row with the same value. The second key will be ignored, leading to the curve interpolating earli ...

NiagaraEmitter using Grid 3D Template of NiagaraFluid plugin at coordinates greater than about 10.5 km is not displayed

Set world or relative rotation on a child component sets the wrong rotation

Unexpected results from setting relative rotation on child of child in BP. Also confirmed in Main CL 4302610 "I have found that changing this code from RelativeRotationCache . RotatorToQuat (NewRe ...