engine capacity calculation bug

While i build my engine for the TEC i discovered a bug with the capacity calculations. I am using Automation Build 1003.
Engine before saving:
Bore: 99,4mm
Stroke: 73,6mm
Shown Capacity: 2283 cc
Real Capacity: 2284,548886 cc
Engine after saving and reopen
Bore: 99,4mm
Stroke: 73,6mm
Shown Capacity: 2285 cc
Real Capacity: 2284,548886 cc
Also the other stats are changing. When i click once on the arrow to decrease the Stroke the
capacity changes to 2283 again but the stroke is untouched at 73,6mm.
Also the stats in the engine preview does not change after saving.
Engine before saving:
Bore: 99,4mm
Stroke: 73,6mm
Shown Capacity: 2283 cc
Real Capacity: 2284,548886 cc
Engine after saving and reopen
Bore: 99,4mm
Stroke: 73,6mm
Shown Capacity: 2285 cc
Real Capacity: 2284,548886 cc
Also the other stats are changing. When i click once on the arrow to decrease the Stroke the
capacity changes to 2283 again but the stroke is untouched at 73,6mm.
Also the stats in the engine preview does not change after saving.