FormInput on a custom field removing new lines from string

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I have a FormInput widget setup as shown below. However, the multiple lines of text seperated by blank lines only shows up correctly when the page loads and during data entry but when submitted the data converts to a single line of text and loses all line breaks. When I change the name field to incidents.thread it keeps all formatting but I need it to input into the custom field and when the name is a custom field the formatting disappears. I have tried inserting unicode line breaks as well as "\n" and <br /> into the blank lines but both show