Control Tip Text

MacAir; SnowLeopard; Word2011

I cannot get the tip text that I dynamically assign to most of my user form controls to appear. Whether assigned as a property or assigned as run time, nothing shows when I hover over the control.

Any tips (no pun intended)?

Do you get tool tips from Excel's built in controls?

My Userform .ControlTipText property behaves as expected.

Excel2011
OS 10.5.8
MacBook