http://bugs.winehq.org/show_bug.cgi?id=30686
--- Comment #9 from Nikolay Sivov bunglehead@gmail.com 2012-05-15 09:17:41 CDT --- I can't reproduce that, attached document opens fine with 'fur fur' in it with umlauts, with no spaces in words.
To make sure please reinstall Office in clean wine prefix.