Self-employed health insurance paid entry cannot be deleted

I have entered an incorrect entry and I could not find a way to delete it or modify it.  From previous posts it seems that I have to go into edit Self-Employed Income and Expense screen to delete it, but I cannot find an option to go into Expense part.   

I was able to manually delete the entry under Schedule C, line 15, but the entry in line 17 of Schedule 1 cannot be modified.  

I think this is a bug.