http://bugs.winehq.org/show_bug.cgi?id=58914
--- Comment #7 from Rafał Mużyło galtgendo@o2.pl ---
And always at the same index in these Comboboxes.
...when you were trying to make a testcase for this problem, are you sure you copied all the code involved in creating the combobox *and* populating its model ?
Cause that sounds like you're overwriting/reusing a var somewhere without noticing it...
Could also be some threading problem, but your line suggests otherwise.