I appear to have a bug with the fonts with respect to the margin.
I always use Georgia Font.
Font size +6
Line Spacing +3
Margins +2
Justification OFF
Kobo Styling ON
When I turn the reader on the margins appear to be at 0 as shown in the pic below.
After reading usually about 20 pages the margin finally starts working at my desired +2 width as shown in the pic below.
Once the margin repairs itself, I can make it bad again by going to the Home page and then reopen the book. That's what I did to get the two pics of the same page. You can see that it messes up the number of pages in the chapter and so my placemark is a bit off. Somewhat annoying.
ltr