RTL Fractions problem

I an trying to build RTL fractions using hindi and farsi numbers, I took Tal Leming’s Fraction Fever 2 python script and updated it to have only the required glyphs with some tweaks but I am getting weird results.
The result is supposed to be like this:

Here is the link to the edited script on github gist

Any idea or suggestion?

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The RTL support inside Glyphs doesn’t support RTL and numbers. Those are supposed to be LTR in a RTL context. So please test it in a browser, FontGoggles or Indesign.

I have the same output in indesign unfortunately.