Did it annoy you when you reopen a PDF (with Adobe Reader I assume) document, it starts back at the beginning?
You have to scroll all the way to the page you just read last time?
Here is the way I did to Adobe Reader to make it remember the last page I was at the next time open.
Edit > Preferences(Ctrl + K) > Documents.
On Open Setting: Tick on “Restore last view settings when reopening documents”
And it should be fixed.