Chargeback G/L Date Issue

Have an issue where when a user is working with an open deduction, if a chargeback is created and the G/L Date entered is not setup in the fiscal date pattern, the system is still allowing the chargeback to be created with the invalid G/L Date.  The attachment shows the steps taken, the soft/hard warnings received, and the resulting chargeback created with the invalid G/L Date.  Not sure why the system is allowing a G/L Date that does not have a fiscal date pattern setup, or if it is a bug.  We are on E9.1, Tools 9.1.4.