Just installed the 3.4.3 update. The functionality I had been relying upon is restored.......thanks.
"Next page" works better than "next screen" for me........I think some of my PDF documents have inconsistent page sizes in their meta data.
I had also not realized how much I relied on annotations to highlight or make notes on dynamics, tempo, repeats, etc in my charts...........until they were missing........all seems good now.