Recently update to r251 and I am getting the error below for child objects. If I remove the hierarchy the tween works ok:
Uncaught (in promise) TypeError: Cannot read property 'GetOriginalWidth' of null
at NumericInterpolationAdapter._instance_getter (numericInterpolationAdapter.js:5)
at numericInterpolationAdapter.js:11
at NumericInterpolationAdapter._PickSource (propertyInterpolationAdapter.js:8)
at NumericInterpolationAdapter._Getter (numericInterpolationAdapter.js:11)
at NumericInterpolationAdapter.GetCurrentState (numericInterpolationAdapter.js:9)
at NumericInterpolationAdapter.CompareInitialStateWithCurrent (numericInterpolationAdapter.js:10)
at WorldInstanceSourceAdapter.CompareInitialStateWithCurrent (propertySourceAdapter.js:3)
at PropertyTrack.CompareInitialStateWithCurrent (propertyTrackState.js:9)
at Track.CompareInitialStateWithCurrent (trackState.js:23)
at Tween.SetInitialState (tween.js:8)
Member since 4 Jan, 2021