Redmine

Hello,
on following link:
https://www.redmine.org/boards/2/topics/36299
i found example how to do "full search" by something.
Like this:
http://www.redmine.org/issues.xml?project_id=redmine&cf_2=*ix*&limit=100

but is returns much more result than required.

For example:

Duplicate doesnt contain "ix"

Please register as bug to be corrected.

PS: It works same on 5.1.2.stable version.
Searching "*man*" and returns record with:
<custom_field id="6" name="HBpotencialProviders">
<value>15,16</value>

Thanks Petr