One of the fields in my log file contains JSON data and I've set it to format as JSON using the following column definition:

(line: Message): CellHandler => {
    return {
        text: line.json_content['Data'],
        isJson: true
    }
}

When the Data column is visible in the table and I open a line in the drawer, the field is displayed properly indented in JSON format. However, if I hide the column in the table and then re-open the drawer, the field is displayed in the "Non-table fields" section as plain text, all in a single line with no formatting.