it's a bug, but one that'll be fixed in the next release, along with some other enhancements, such as dynamic sorting, ability to hide any of the columns, tooltips in the library showing meta-data, tooltips in the connections table showing the connection-headers & the time the connection was established, an extra column in the connections table showing how long you're connected, arrow icons in the table's column headers showing which column is sorted & whether or not it's ascending or descending, and a major rewrite of the statistics, complete with pretty graphs that plot changes over time, showing things such as total messages, query hits, pings, pongs, etc.... and that's just on the gui side.