Hi @Chloe Davies ,
Yes, SharePoint columns have a minimum column width. This is by design, and there is no way to make it smaller than the minimum value. Just like in your case, JSON can't do it either. But when your text length exceeds the minimum value of the column width, you can make the column change the column width by:
1.Grag the right edge of Answertest
column header.
2.Click the dropdown of All Items -> Save view as -> All Items -> Save.
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