Formatting lost in IOS

I’m writing a film script on Scrivener, but re-editing a page on an IOS device changes the formatting to some generic format, also changing the font. It’s hard work to re-edit all IOS changed pages back to correct format on a Mac.
So I can read but not edit a screenplay on IOS.
Is that normal?


PROBLEM SOLVED: in Scrivener on my Mac I used the font Final Draft Courier, and IOS doesn’t have it, so it replaced the font with another. On my Mac I changed the font to Courier — everything works.
Only use fonts that your IOS devises have.