Confiforms Lookup and Set value: String returned with extra spaces

[David Harrop]

Using 'Rules for Field Definition' to 'Lookup and Set value' on a Read Only field, using a value from another Dynamic Drop Down field as the lookup value to another form in the same Confluence space.

The lookup works, and retrieves the correct value, except there is a space character inserted after each character in the returned value.  So instead of 

The returned value

I get

T h e  r e t u r n e d  v a l u e 

The source field is of Text type.  The field value on the source form is not displayed with extra space characters.

Other fields of the same type return correct, unspaced values.  The only difference I can see between the problem field and those that work is length, where the problem field may be 100+ characters, and all other working fields are shorter.

[Alex Medved _ConfiForms_]

Most probably you have multiple rules that are triggered 

Try setting the ConfiForms Registrations Control macro into the debug mode to see which rules get triggered to understand which ones return an array of values instead of a text

[David Harrop]

Debug mode not available in my org's instance!

I have one Rule in my form.  It populates all read only fields in my form.  All but one are populated correctly.

I suspect it's down to the length of this particular text field

[Alex Medved _ConfiForms_]

Debug is just the parameter in the mentioned macro. 
Could you share which rule do you have?