Looking back at the replay, Beaulieu felt that he was pushed, but also could see the call reasonably going the other way.
"It's a tough play," he said. "Just trying to go to the net and things kind of happen quickly. We're not going to argue it. The refs, they have a job to do and they make their calls. Can't overturn it now so just got to live with it."
Some of the Sabres' best opportunities to tie it up came in the final five minutes of play.
"It's unfortunate we weren't able to get that goal there at the end of the game. I thought we had some good chances," captain Jack Eichel said. "That goal interference, it's frustrating, but obviously, I think if it was the opposite, if our goalie got bumped, I think we'd be pretty frustrated with the same situation.
"Ref's got to make a split-second decision and it's unfortunate that was the only chance we were able to get by Bishop. You've got to give him credit. I thought he played well. He made some big saves down the stretch.
The Sabres have now lost their last seven road games against the Stars and haven't won in Dallas since a 5-4 shootout victory on Jan. 15, 2009.
"It was a physical game. It was a tight-checking game. There wasn't a lot of room out there," Housley said. "The chances were very, very low so you had to fight for all your space. The one thing I thought we could've done better, even though we outshot them 14-6 in the third period is just get to the net."
With the loss and a Penguins win over Tampa, the Sabres are three points behind Columbus for the second Wild Card spot. Pittsburgh was able to jump into the second spot in the Metropolitan Division with their 4-2 victory.
"There are no moral victories at this point of the season. It's either you get two points or you don't at this point," Eichel said. "We didn't get two points tonight so it's back to the drawing board. We've got a big game and a long home stretch we need to take advantage of."
Buffalo will be back at it on Friday against the Chicago Blackhawks to open up a seven-game homestand.