TurboTax said 1099-R box1 cannot be zero, but it's not a distribution but a 100% rollover

I received a 2024 1099-R for a 100% rollover from employer 401k Roth to another Roth IRA, with box 7 having code '1B', box 1 $0, box 2 $0, and box 5 $7k.  During fed final review TurboTax reported error for this form, and kept saying this 1099-R box 1 cannot be $0, and must be at least $0.50.  Could this be a bug in TurboTax, since this 1099-R is a 100% rollover, as indicated by box 7 code '1B', and box 1 and box 2 both $0.00.  Appreciate any help.  Thanks.