I filled out the free extension form 4868 online and form seems to have a bug. It listed a Balance Due on line 6 (instead of 0) when line 5 was greater than line 4.

This is for tax year 2021. I can't find any way to 'report' this bug so I don't know if someone has a way to report it or if Intuit is monitoring this board. When i filled out the same form with my TurboTax desktop software it showed a 0 on line 6, but the desktop version didn't seem to submit electronically so i went online to the free extension.