Attrui (showontab ) cause crash of Max

It appears that the use of the object is problematic Attrui Max
In fact, I create a patch containing two subpatch, Each patch has a below fpic object loading an picture with a frozen attribute, I save the patch, and open the pictures changed. Is there a problem compatibility between attrui and fpic. Moreover, it seems impossible to use attrui object (showontab) within a sub patch, it causes the crash Max.