Stock dissapears when inputting inches symbol

[FrodoLoggins]

If I enter in either " or inches after typing a value of .375, the stock is fine. 

However, if I enter in either " or inches after typing a fraction of 3/8, the text goes red and the stock goes dissapears and warns me I don't have enough stock:

[brad_francola]

Yup.  That's weird. 

[brekmiller]

This is a long-standing problem, CAM-20159.

When you write "3/8in", Fusion sees "3 / (8in)" and doesn't understand how to divide 3 by 8inches.  In fact, if you click OK and then edit the setup again, you will see "0.000581251in"

3/(8in) = (3mm)/(8in) = (3mm)/(203.2mm) = 0.0147637795276 = 0.0147637795276mm = 0.000581251in

"(3/8)in" is sensible, but doesn't work.

"3in/8" works for me.  Fusion knows how to divide 3 inches by 8.

"3/8" also works for me because your project's "active units" is set to inches.  You need the unit trick only if you want an expression is some other units, like "50mm/2".