I did not find this to be the case. I found that TT calculated the amount I could contribute, plugged that in as being contributed before the filing deadline, and never told me about it. I wasn't aware that I could contribute anything and would have missed making that contribution if I hadn't stumbled across the amount on one of the forms.
I tried resetting the contribution to zero, stepped through the pages, not a peep about how much I could contribute.
