FEEDBACK: need support for distribution from inherited traditional IRA that had nondeductible contributions (Form 8086)

Using 2021 TurboTax Deluxe for Windows (downloaded), I am unable to file electronically because I have a distribution from an inherited traditional IRA that had nondeductible contributions, which requires Form 8086.

I am disappointed this is not supported by TurboTax, at least according to TurboTax Help:

From TurboTax Help:

However, if any of these 3 situations apply to you:

1. You received a distribution from an inherited traditional IRA that had nondeductible contributions
2. You transferred an inherited plan account to a Roth IRA
3. You received a distribution from an inherited Roth IRA that was not a qualified distribution

then you'll have to download and print Form 8606, manually fill it out (instructions), and print and file your return, as you won't be able to e-file.