Brown empty row on "View Issues" page bugs list

[anva]

Yesterday I added a custom "delayed" status after the "assigned" status, assigning it the number 60. Today I thought the better place for it was after the "confirmed" status, so I changned its number to 45, and changed the order of the status array as well. Since I accomplished this change, I noticed that sometimes I get a brown empty row on the "View Issues" page bugs list, just under the only bug that was marked with the "delayed" status tag. If I tried to order by Id or anything else, all other issues got ordered out of this one. I deleted the bug and inserted it again, and now everything works fine. Any idea on what can be happened?