The Bruins were in position to close out a game a strugling Vancouver Canucks team on Saturday night, but their season-long problem of closing out games resurfaced yet again.

The B’s coughed up a late 2-0 lead and then took a too-many-men penalty in overtime in their fifth straight game to go to extra time. And on the power play, Brock Boeser tipped home a J.T. Miller pass to lift the Canucks to a 3-2 win at Rogers Arena.

After taking a 2-0 lead in the second period, the B’s went into a defensive shell and it cost them dearly.

The Bruins scored both theiir goals in the second period.

The first one came at 5:27 on another fourth line goal. Off a neutral zone faceoff win, Juston Brazeau bulled his way into the offensive zone and made a terrific pass to Jesper Boqvist for a pretty tuck inside the near post for his third of the season.

Then they took a 2-0 lead at 11:15 on greasy third line goal. Morgan Geekie dumped the puck behind the net for Trent Frederic, who tried to stuff it home. That failed,, but the puck went to Danton Heinen in the crease and he jammed it home for his 11th goal of the season.

But the B’s were playing too muc time in their oown zone, especially after their fourth failed power play to start the third period.

Vancouver finally got on the board at 12:49 of the third. J.T. Miller beat Pavel Zacha cleanly on a faceoff to Jeremy Swayman’s left, getting it back to Nikita Zadorov at the point. The big defenseman got to sniiper Brock Boeser on the left wing aand her bured it past Swayman’s blocker. It was the Canucks’ first goal against the B’s in five-plus periods this season.

It wasn’t their last.

With 1:11 left in regulation and goalie Thatcher Demko pulled for the extra skater, the Canucks won another faceoff in the Boston zone and Filip Hronek blasted a blue line shot that, with Boeser in front, Swayman could not catch up to with his glove.