This is a known bug and has been reported. Remove the amount as requested.
Go to the Charitable Donations section under Deductions & Credits to enter the amount of cash donation. This will correct the problem.
To enter charitable donations -
Or enter charitable donation in the Search box located in the upper right of the online program screen. Click on Jump to charitable donation.
"Level 15 DoninGA" Original Post
The fix has you enter the amount as part of Itemized Deductions, which does not flow through to Line 10b. The point of Line 10b is to allow a $300 deduction IN ADDITION TO CLAIMING THE STANDARD DEDUCTION. Entering the contribution where you instructed goes nowhere.
Please fix your bug.
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https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
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