Chamfer Dimension issue

Hello

Please refer the attached Nx 9 model (Actual Version Nx 11).

In the attached file majenta chamfer is Symmetric 1 mm i.e., 1 mm x 45°.

But while dimensioning in detailing it shows 1.31 vertical and 0.78 horizontal. This need to be dimensioning as 1 mm without manually editing the dimensions.

Any suggestions invited.

Thanks in advance

Sekar