Filename Tab for LogTailer filename expression incorrect

When i use a file expression ( bb_%MM_dd%.log ) for a log file, the the name
of the file displayed when you mouse over the tab shows the current days
file name, and the file is tailed correctly but the file name in the tab
doesn't change. The Name displayed in the tab is the day i added the
expression. Anyone else seeing this?

build #688, LogTailer v0.05
thanks,
eric.