Ignore Chat function not working

[Origin]

Hi. I had this character on ignore previously, but it's disappeared from my ignore list. When I try adding the name back it just gives me this system message : "<name> has already been ignored". The person's PMs don't get filtered out, it doesn't add the name in. Also when I did a test, added and deleted one name, three different names got wiped off the list simultaneously. Could you please fix this asap. Thanks.