Exporting the correct scale stl file is not work as before?

Hi All,
In previous versions of Blender I’ve been able to export .stl files at the correct scale as they have been applied on the model. However now in 2.8 when I check the stl file it usually x100 too small.

The transform box says the scale is 1.00 for xyz and I’ve always left the export scale at 1.00.

Does anyone know why this is or what I’m doing wrong?

Many thanks,
Jason