Previous view and Next view had only Cmd+[ / Cmd+] (Ctrl elsewhere), and
Alt+Left turned the page, since the arrow keys ignore Alt. The document
view now takes Alt+Left / Alt+Right (Option on macOS) for them, as Acrobat
and browsers do, before the arrows turn the page. Following a link
already records where it was followed from.
With a picture or objects selected in Edit text & images, the arrow-key
nudge ran first and also matched a press with Alt, so Alt+Left moved the
selection. It now takes only arrows pressed alone or with Shift, judged
by each key press's own modifiers rather than the frame's.
Help > Keyboard shortcuts lists the pair under the existing Previous view
/ Next view labels.