Maximum Categorize shortcuts in Outlook 2010?

King Mustard

New Member
Outlook version
Outlook 2016 64 bit
Email Account
Exchange Server
When we click on Home > Categorize > All Categories..., we see 21 entries.

However, when we click on Home > Categorize, only 15 are appearing.

Is there a hard limit of 15 in the Categorize menu, or is there a deeper issue somewhere?