https://bugs.winehq.org/show_bug.cgi?id=52779
--- Comment #4 from Lorenzo Ferrillo lorenzofer@live.it --- 012c:trace:message:SPY_EnterMessage (000100D0) L"{ComboBox}" [014b] CB_RESETCONTENT sent from self wp=00000000 lp=00000000 012c:trace:msg:WINPROC_CallProcAtoW (hwnd=000100D0,msg=CB_RESETCONTENT,wp=00000000,lp=00000000) 012c:trace:message:SPY_EnterMessage (000100D2) L"{ComboLBox}" [0184] LB_RESETCONTENT sent from self wp=00000000 lp=00000000 012c:trace:msg:WINPROC_CallProcWtoA (hwnd=000100D2,msg=LB_RESETCONTENT,wp=00000000,lp=00000000) 012c:trace:msg:WINPROC_CallProcAtoW (hwnd=000100D2,msg=LB_RESETCONTENT,wp=00000000,lp=00000000) 012c:trace:win:RedrawWindow 000100D2 whole window flags: RDW_INVALIDATE RDW_ERASE 012c:trace:message:SPY_ExitMessage (000100D2) L"{ComboLBox}" [0184] LB_RESETCONTENT returned 00000000 012c:trace:win:RedrawWindow 000100D0 whole window flags: RDW_INVALIDATE RDW_ERASE 012c:trace:message:SPY_ExitMessage (000100D0) L"{ComboBox}" [014b] CB_RESETCONTENT returned 00000001
That log part with wine 7.4