Not all of Income is being acknowledged when computing the Roth IRA contribution limit

My income is through a fellowship and thus I do not have a W-2.

As a result, I have put in my income as "Other reported income". When it comes to taking into account my Roth IRA contributions, TurboTax states that my income is $0 and thus I have exceed my contribution limit.

 

I tried removing and adding the income, but that doesn't seem to change the calculus.

Is there something I'm missing or is this a bug in TurboTax?