If you create the type "select" with the integer 0 as "safe_key|Some readable option" for your select options, the "readable option" is not displayed on the form.
eg. if you enter the following as options for the select type:
The readable option is not displayed on the form or when viewing a submitted form. Also if you download it as excel, the readable option is not displayed. The same problem exist if you download it with the keys instead of the readable option.
When viewing the "Analysis" page, the readable option is displayed. Shouldn´t also the form display this?
If you add a space to the "safe_key|Some readable option" everything displays as it should:
0 | 0
1 | 1