Default for Financial Account should be per Financial Account Type

If one asset account, eg, Bank Account, is set to default true on Edit Financial Account form (civicrm/admin/financial/financialAccount?action=update&id=6&reset=1), and a Financial Account of a Different Financial Account Type (eg Cost of Goods Sold) is editted, and its default is set to True, the second should not cause the first to be set false. There should be one default for each Financial Account Type (eg Expenses, Revenue, etc.). Unfortunately, there is a bug that only allows a single default to exist across all financial account types. Please fix.