Problem editing open office writer documents

[msuch]

Problem editing Open Office.org writer documents.
When reading a document under Oo writer, speech does not follow cursor moves correctly.
When arrowing up or down, sometimes NVDA says a different line of the one you are on, though pressing nvda+8 gives the right line.
It seems it happens when document lines are very long.

[mdcurran]

Fixed before/in r2315.