MFC : Focus rectangle of check box or radio button blackened in a Cformview

I have a solution who worked fine from 3 month, versioned and not modified.
Today, i run the solution, i get this :

Remarque 1 : i never override "OnCtlColor" or inherite base classe (CFormview) or something like that.
Remarque 2 : i don't have this problem in "Release" mode

Thanks.