Index: base/shell/explorer-new/taskswnd.c
===================================================================
--- base/shell/explorer-new/taskswnd.c	(revision 58265)
+++ base/shell/explorer-new/taskswnd.c	(working copy)
@@ -1462,7 +1462,7 @@
                     sizeof(TBBUTTON),
                     0);
 
-        This->TaskIcons = ImageList_Create(16, 16, ILC_COLOR32, 0, 1000);
+        This->TaskIcons = ImageList_Create(16, 16, ILC_COLOR32 | ILC_MASK, 0, 1000);
         SendMessage(This->hWndToolbar, TB_SETIMAGELIST, 0, (LPARAM)This->TaskIcons);
 
         /* Calculate the default button size. Don't save this in This->ButtonSize.cx so that
Index: base/shell/explorer-new/trayntfy.c
===================================================================
--- base/shell/explorer-new/trayntfy.c	(revision 58265)
+++ base/shell/explorer-new/trayntfy.c	(working copy)
@@ -380,7 +380,7 @@
                     sizeof(TBBUTTON),
                     0);
 
-        This->SysIcons = ImageList_Create(16, 16, ILC_COLOR32, 0, 1000);
+        This->SysIcons = ImageList_Create(16, 16, ILC_COLOR32 | ILC_MASK, 0, 1000);
         SendMessage(This->hWndToolbar, TB_SETIMAGELIST, 0, (LPARAM)This->SysIcons);
 
         BtnSize.cx = BtnSize.cy = 18;