Frontend Export with Multi-Word xProfile fields issue

I am exporting user data including BuddyBoss xProfile fields. It’s working fine from the backend but breaks on the frontend when I use a shortcode. It appears the issue is with xProfile fields with multi-word field names. It returns all fields if one of the fields in the shortcode has spaces in the field name. Here is an example that breaks.

[export-users columns=”source_user_id,Legal First Name”]

I tried the following and it returns nothing for the Legal_First_Name.

[export-users columns=”source_user_id,Legal_First_Name”]

It appears the shortcode is not working when field names have spaces. Can you help?