Custom integer field fails in 'search in range' and in Export

This may also affect Contributions. On Demo I created Custom Data for Memberships, type = INteger, Searchable = YES and Search by Range.
Add info to two records - one is 4, one is 8 - use Find Members, enter range of 2 to 6, run search - result is 30 records ie every record in the DB.
I also tested for data for an Individual and it works fine.
Shall I add an issue?

Hmm - Related to above - and possibly for same reason hence same post - when I try to export the data it adds a column, which is called 'custom_4' rather than using the Label, and returns no data.

here on forum - http://forum.civicrm.org/index.php?topic=12971