This is a known issue that we are currently working on. Please refer to the article below for more information.
Since you are entering an income item, the following workaround may help.
1. Click on Federal Taxes
2. Click on Wages & Income
3. Click on Help me add more income
4. Click on Jump to full list
5. Find the income item in the list at the bottom and click Start/Edit
6. Try to enter the information this way, rather than the top
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