Get your taxes done using TurboTax

So basically, it seems that for those who have a 401(k) through an employer, to which they make employee contributions (with/without employer match), but also an individual 401(k),  the "maximize contributions" button should not be used, as it does not take the employee contributions to the first 401(k) into account when calculating the amount of elective deferral ("employee" contributions) in the i401(k).  Is that correct?   

 

Shouldn't that be somehow corrected in the software, or at least have it raise a flag when checking for errors?