While Sierra seems to have fewer bugs than other recent OS updates, I'm encountering two problems in Pages.
1) The Voiceover 'find' command (VO f) works fine, as does the 'find next' command (VO g) -- but only for a while. After pressing VO g a few times, it stops working, even though I know the document contains more instances of the word I'm looking for.
2) The old bug that prevented selecting text across a page break is mostly fixed, but not entirely. If I select by marking the beginning of a block of text with VO Return, then marking the end with another VO Return, it works fine -- even across a page break -- if I move word-by-word. But if I move line-by-line, the selection breaks down as soon as I encounter a page break.