http://bugs.winehq.org/show_bug.cgi?id=26365
--- Comment #3 from Javier Kohen jkohen@users.sourceforge.net 2012-01-16 13:53:04 CST --- I have a little bit more information on how to reproduce this, and I'm attaching the output of the ddraw debug channel.
As soon as your character appears on the map, it works fine:
1) Before you do anything else, you can press F1 to see the help and all the text should appear on the screen (gf-help-before.log). 2) Have the character walk. A short step is enough (gf-walk.log). 3) After the previous step the text outside the map view is clipped. You can press F1 to see the help and you'll see how the text that falls outside the map view is missing (gf-help-after.log).
Surprisingly diff between the before and after logs gives relatively few differences, and there are clear patterns, though I can't tell whether they are significant. Hopefully gf-walk.log or the diff gives someone who knows ddraw a clue. There is also a demo you can play with to test this.