SAB 6.2.2. MAC Scaling of Bible Books and other books in Arabci script

We have to APP with ARA script : one let me scale bible books and additional html books which I have edited to change pt sizes into percentages.
The other second APP is similar but for ??? reason we cannot scale neither bible books nor html books …
What could be the cause of this?

Do they both have font-size as a percentage?

YES … yes!