HP50G: CAT functionality?

[Bill Zimmerly]

On this HP page, it describes using the CAT command as follows:

"From the catalogue you can select and execute any of the existing commands. The catalogue is much like a menu of an application, where you can use the arrow keys to select menu items, or jump to the items typing the first few letters of them. While the catalogue is active, press [ALPHA] [ALPHA] [I] [N] [T] to jump to the command 'INT'."

But when I try this with my HP50G (ROM 2.15) it jumps to the beginning of the "I" list, then the beginning of the "N" list, then the beginning of the "T" list.

Is there another flag setting that will make the CAT command work as described above?