We have created our own task content type based on workflow task which has a choice column.  If we use the OTB task form it shows the drop down as expected.  If we create a Nintex form the generated form includes a single line text box for our choice column instead of a choice field.  If I add the choice column from the Task Columns toolbox group there is a warning that says 'The "Choices" property is required'.  It should get the choices from the task content type shouldn't it?

Thanks in advance,

Eric