Regression: control panel does not open when selected from start menu

control panel does just not show

log says

(lib/rtl/actctx.c:3073) Could not find dependent assembly Microsoft.Windows.Common-Controls (6.0.0.0)

Pretty recent regression - less than 5days
69350 gcc dbg affected (current HEAD)
69341 gcc dbg affected
69330 gcc dbg affected
...
69321 gcc dbg still ok