Shuffling bug?

Seems like xmage tends to lump the same cards together too often, too many times I scried to bottom after I mulligan and draw the exact same card. Maybe that's just coincidental
However today I drew 2 thought knot seers in a row, followed by 3 Reality smashers in a row, and my opponent drew 3 chord of callings in a row while in topdeck mode, all in the same game. Coincidental? I feel there might be a bug somewhere.
However today I drew 2 thought knot seers in a row, followed by 3 Reality smashers in a row, and my opponent drew 3 chord of callings in a row while in topdeck mode, all in the same game. Coincidental? I feel there might be a bug somewhere.