http://bugs.winehq.org/show_bug.cgi?id=21920
--- Comment #20 from Dylan Smith dylan.ah.smith@gmail.com 2010-05-17 10:44:43 --- (In reply to comment #19)
Created an attachment (id=27912)
--> (http://bugs.winehq.org/attachment.cgi?id=27912) [details]
richedit: Avoid notifying parent window in improper state.
Accepted as commit 049cf5aca0a2daafe0ce078757ad60f1a1cadc9e, so please test with latest git checkout rather than patching, or test the next wine release to see if this fixes the bug.