SnglBurstTable.fetch returns triggers outside of requested interval

The SnglBurstTable.fetch method is returning events outside of the requested interval:

>>> from gwpy.table.lsctables import SnglBurstTable
>>> start = 1127217617
>>> table = SnglBurstTable.fetch(
    'L1:GDS-CALIB_STRAIN', 'omicron', start, start+100)
>>> print(table[0].get_peak(), start - table[0].get_peak())
(LIGOTimeGPS(1127217249,440917968), LIGOTimeGPS(367,559082032))

I think the filt argument needs to be defaulted or appended to to restrict triggers to the given interval.