I have a script that loads data from excel and then generates a new formula column. The column appears empty however, even though my formula preview shows values. Once I copy/paste the column into the same datatable suddenly the values appear. What's going on here?
Easiest demo is through the gif below. I also added the script and excel sheet.

Names Default To Here( 1 );
//Prompt to select and open an MS Excel file
path = Pick File( "Select Excel File", "$DOCUMENTS", {"Excel Files|csv;xlsx;xls", "All Files|*"}, 1, 0 );
fname = Word( 1, Word( -1, path, "/" ), "." );
//Let the user choose the name of the datatable
w = New Window( "Choose datatable name", // opens a window with a title and this content...
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