Does anyone else have this issue?
Just tried it (Mac) and couldn't reproduce this. Searching for "then" switched the pages as neeed, for both PDFs and ePubs.
I'm on Windows 7 Ultimatte 32bit, Adobe Digital Editions 22.214.171.1241, FP 10. I've Itried FP RC4 now with the same issue; while in "Fit to Width" or "Custom Width" somtimes it works other times I must scroll a paragraph or so until I see it.
Fit Double or Single Page work well, the page moves forward every time.