https://bugs.winehq.org/show_bug.cgi?id=46275
--- Comment #3 from Gabriel Ivăncescu gabrielopcode@gmail.com --- Sorry about that, I misread, but I got no errors on Win 2k3: https://testbot.winehq.org/JobDetails.pl?Key=45629
There are some known issues with dispatch_message since it uses an arbitrary Sleep. Windows handles the autocompletion enumeration etc in a separate thread. Fixing it requires quite a hack workaround, Huw decided it wasn't worth it since it complicates the tests too much. (it involves subclassing the editbox after AutoComplete, listening to specific WM_APP message (or registered message) and signaling that the autocompletion was done; however, additional complications arise for ResetEnumerator because then it doesn't even signal to the main thread so we have to use a custom signal from within IEnumString::Reset, which is too hacky).
However, I don't actually see *why* it would specifically have to do with dispatch_message here, in this particular case. Perhaps there was a bug with the keydown/keyup when the VM was overloaded or something, I don't know.
But I guess it was a false alarm.