The young Clarets crashed to a 0-4 defeat at home to second-placed Huddersfield Town in a one-sided top of the table clash.
The Terriers dominated from the early stages and were gifted a goal, when the unfortunate Bobby Thomas, in an attempt to block a shot, turned the ball in to his own net.
Burnley had an opportunity when Jordan Cropper found space in the area before his square-pass to Michael Fowler was cut out by Town skipper Cameron Taylor.
However, it was Leigh Bromby’s Town side who got the crucial second goal, as Matty Daly slotted the ball home past Bruce following good build-up play.
And just before the break Town had their third as George Danaher headed home Scott High’s teasing cross.
The Clarets made a couple of half-time changes and a change of formation looked to have paid off as a much dominant opening 10 minutes saw Burnley come close to gaining a foothold.
But despite the home side having plenty of possession, Huddersfield got a fourth after the hour mark when Taylor rose highest in the area and nodded in High’s corner to inflict a fourth league defeat on Danny Cadamarteri’s side, who now sit fourth in the league.
BURNLEY: Bruce, Clarke, Moss, Thomas, Mpofu, Yari, Kershaw, Mupariwa (Samms 60), Cropper (Jumeau HT), Fowler, Harris (Major HT).
Unused Subs: Calderbank-Park, Taylor.