I'm having a problem with the list of "Authors" in the tag browser. Previously, it grouped the authors by alphabets but now it has 4 groupings, as follows (#s in parentheses are the # of authors):
0.00 - 0.00 [100]
0.00 - 0.00 [100]
0.00 - 0.00 [100]
0.00 - 0.00 [92]
I was doing some maintenance of the metadata and doing searches on authors to update series info etc and everything was working fine one minute and then the next this problem came up. I'm not sure if I did something to cause this - can someone please help?

Thanks in advance.