[GNC] Why is “Licenses and Permits” Charges, not Expenses?

[Howard M. Fried]

Mac OS 10.15, Gnucash ver 4.4

In my (business) account hierarchy, all Expenses are listed as positive 
numbers (in black).  However, the Expense category Licenses and Permits 
is displayed as a negative number (in red).  In the list of 
transactions, the amount column is labeled Expenses for all (in-use) 
expense categories, except Licenses and Permits, for which the amount 
column is labeled Charges.

Nevertheless, the total of Expenses includes the amount for Licenses and 
Permits.

Why the difference (it doesn't seem to matter)?  Have I set up my 
account incorrectly?

Many thanks,
Howard