Form 1040 Line 12b shows unacceptable value

Line 12b on the Form 1040 is for charitable contributions when a taxpayer is taking the standard deduction.  A taxpayer with a filing status of single, is allowed to deduct up to $300 (in cash only, no non-cash charitable deductions) as a charitable contribution.  Taxpayers with a filing status of married filing jointly, and taking the standard deduction, can deduct up to $600 (again cash only) as a charitable contribution.  Review your entries for charitable contributions to ensure you have not entered an amount greater than what is allowed for your filing status. 

I have received and tried three different responses to fix this issue and none have worked so far.  I have walked through all the deductions, removed my itemized listing of charitable deductions, used ItsDeductible to import my charitable contributions and the result is always the same.  I have deleted the $300 numerous times, replaced it with zero and then $600 (the correct amount) and every time it repopulates with $300 and then tells me that is in error.    I cannot file until this is fixed, who or how can I contact at TurboTax to get this fixed? I have used this product for over 15 years and never have run into any problem like this before.

This issue should be fixed by TurboTax (intuit).  We should not have to do a work around to fix it.  How do we get this issue to them if they don't see it here and fix it  Intuit, are you hearing this?

I'm getting the same error, I think and I've updated the desktop software (Deluxe plus State) as of 2/7/22. What a mess!!!

Originally I entered two different lines containing cash donations totaling over $4K. Completed both the Fed and my state (KS) program. Notice when I went to up to the top left corner and selected Forms that the "Errors" stop sign lit up with a red asterisk next to 1040/1040SR Wks. Scrolling down revealed the issue was on line 12b.   Line 12a shows the standard deduction of 27,800. The next line appearing in the center between lines 12a and 12b defaults to my contribution total. Line 12b automatically populates with 300 in red with a yellow highlight. I am filling Married Filling Jointly. The directions on Line 12a declare that if MFJ then enter $600. If I manually change Line 12b from the red colored "300" to "600" it will stick until I run the final Analysis after the FED and State portions.   (It will be okay after just running the FED Review portion alone).  Then it changes back to 300 and the error is logged.   

There is a difference in the tax I pay for both the FED and State based upon the answer to Line 12b is "300" or "600". 

 I can not get around this error manually. 

I've read all of the pertinent posts I can find.

So maybe the error lies in the final "REVIEW" section where "Analysis" if found. That runs a check on both FED and State and causes the error again

Turbotax needs to fix this or explain to me how to get around it Please.

TurboTax appears to have a bug.  TT filled in $300 for this line although I am married filing jointly.  It should have put in $600.  I finally found the correct filing information that confirmed the $600 for my filing status so I was able to overwrite the TT entry to $600.  Not without some frustrating trial and error.