@bigtiddyoneesan well, thanks for the clarification.
@Mammoth
Moreover there is the option to mark as unread, so in case you haven't read that chapter just mark it as unread, no damage done. to end it with that.
ok, this has just blown up.
to start it off you said here that:
>Currently the reading progress gets updated as soon as a chapter is opened when it should ideally be updated when the chapter is completed i.e navigating away from the last page.
>in the sticky under miscellaneous "Sync read...
if you want to know why you're favorite manga has not been translated and picked up by "no group"
here's your answer: https://mangadex.org/thread/4541/6/#post_4036290