At the request basis point, OK.
if measurement of the diameter or radius of the base is a whole number, the base to the desired extent.
if the diameter or the radius is a decimal number the cylinder base does not correspond to the requested measurement.
As against the height of the cylinder is accurate.
the tests were done with the pop sound menu => Cylinder, the icon and the cylinder command typed from the keyboard.
could this be a problem with a comma vs decimal point?
I need to investigate this more, but I think this might be related to this bug (MR-1028). I’m making a note to circle back and make sure we check this.