We are aware of the issue, and our development team is working to resolve it ASAP.

In the meantime you can use this calculator on the Canada Revenue Agency (CRA) website to see an estimate of your Canada child benefit (CCB): Child and family benefits calculator
 

Do you have an ETA on when this issue will be resolved and a Turbo Tax Update will be pushed out to users to fix the bug?

@TeresaDG Unfortunately we don't have an ETA yet. 

We appreciate your patience.

While you wait for TurboTax to fix their error/bug, you can manually override and enter the base amount in TurboTax.

What is shown in TurboTax is just an estimate. The CRA will determine how much CCB you will get and notify you after you have filed your return.