Originally Posted by notimp
On Font Sizes 10 and 12 my Kindle refuses to actually change the fontsize, it just stays at whatever fontsize you had selected before.
With previous firmware, only AZW3 files were affected. Now it seems that also mobi files have the same issue. It should be a reader problem. It seems that for some unknown reason Amazon does not want that we set certain font size. Maybe the not allowed size sequence has some caballistic significance.