substition patterns included in export when excluded from display

Hello,

I have the following issue when exporting my view to .csv or .txt:
I made a form in cck with fields 'street', 'number', 'city'. Using views I want to show these items together which is straightforward using a custom text field, 'address', and substitution patterns. The individual fields are 'excluded from display'. So far so good.
adress = [field_street] [field_number], [field_city]

I added the feed export to csv display using the same defaults as above. Al fields are exported nicely except for the 'address' field with its substitution patterns. Only "," is shown.
I played around and when I deactivate 'exclude from display' from any of the fields, this fields is also shown in the custom ´address' field in the .csv file.

For example when the full address is "pinestreet 4, london", it shows correctly in the default view, and shows "," in the feed. When deactivating 'exclude from display' for [field_number], it shows "4," in the feed. But off course it also show an extra 'number' column in the exported .csv file

The error is also shown in the using the views 'preview' function.

I tested the bug on 2 different sites with same results.

Iso