Attach PDF Scale?

In DraftSight 2019 and before when you attached a PDF or used the Graebert PDF Import plugin you could type a scale factor and it would work perfectly every time.

Since 2020 Draftsight now seems to look at the units used in the PDF file itself, so if I have a PDF with a 1:100 metric scale, but the PDF page size is set in inches, the imported drawing comes out 0.39 of the correct size.

This means rather than just knowing the scale of the PDF drawing I have to check the units used for the page size, then multiply the scale by the inch to mm conversion to get a correct number to type in the import scale box which is a massive step backwards.

Does anyone know a workaround for this or if there's an option to turn off this change?