DispayMapping16 bit in LabVIEW NXG

Dear colleagues,

not sure if this question shall be placed in LabVIEW NXG thread or in Vision, let start here.

Using DisplayMapping16Bit property I've got pretty strange result. For example, for  the gradient 0...65535 I mapping the image to 10000...20000 range:

LabVIEW NXG 3.0 code

and here is the result from LabVIEW NXG:

But expected result is the following:

checked with LabVIEW 2018 / VDM 2018

Could be a bug in assumption that the conversion method should work in the same way in both Development Environments. Anyway I was unable to get the same result with different conversion methods.LabVIEW NXG Project in attachment.

Any idea?