comctl32/tab: Always draw parent background when themed.

dlls/comctl32/tab.c

@@ -2315,9 +2315,14 @@ static void TAB_DrawBorder(const TAB_INFO *infoPtr, HDC hdc)
   TRACE("border=(%s)\n", wine_dbgstr_rect(&rect));
 
   if (theme)
+  {
+      DrawThemeParentBackground(infoPtr->hwnd, hdc, &rect);
       DrawThemeBackground (theme, hdc, TABP_PANE, 0, &rect, NULL);
+  }
   else
+  {
       DrawEdge(hdc, &rect, EDGE_RAISED, BF_SOFT|BF_RECT);
+  }
 }
 
 /******************************************************************************

dlls/comctl32/tests/misc.c

@@ -881,7 +881,7 @@ static void test_themed_background(void)
         {WC_STATICA, SS_ETCHEDHORZ, wm_ctlcolorstatic_seq, TRUE},
         {STATUSCLASSNAMEA, 0, empty_seq},
         {"SysLink", 0, wm_ctlcolorstatic_seq},
-        {WC_TABCONTROLA, 0, drawthemeparentbackground_seq, TRUE},
+        {WC_TABCONTROLA, 0, drawthemeparentbackground_seq},
         {TOOLBARCLASSNAMEA, 0, empty_seq, TRUE},
         {TOOLTIPS_CLASSA, 0, empty_seq},
         {TRACKBAR_CLASSA, 0, wm_ctlcolorstatic_seq},