Town boss Rob Edwards was left frustrated after watching his side go down 3-0 at Elland Road.
The Hatters couldn’t make the most of a number of chances and could not keep out the league leaders as they slipped to defeat on the road once more.
“Our decision-making was poor,” said the manager afterwards. “Ultimately we’ve come to probably the most difficult place in the Championship and it looked that way tonight.
“But we had chances, one with Victor Moses and Reece Burke’s is a big one. It’s ifs, buts and maybes.
“We knew they would have more of the ball and we came here expecting that. So we knew when we had a chance that we had to take them and we didn’t in those two occasions.”