Paul Mullin scored a header in each half for Wrexham away to Maidenhead, only for Shawn McCoulsky to snatch a late equaliser for the hosts.
Mullin’s first header gave Wrexham the lead at the break, before Reece Smith’s spectacular equaliser in the second-half.
Mullin scored again just two minutes later, but substitute McCoulsky beat Mark Howard to a long ball to snatch a point in the final minute.
With Notts County also drawing, it means the Red Dragons stay top by one point, missing the chance to go three clear.
Phil Parkinson was forced into two changes, with Rob Lainton and Anthony Forde ruled out following some illness in the Wrexham camp.
It meant a return in goal for Howard, while Ryan Barnett came in for his Wrexham debut at right wing-back.
Barnett was into the action early on too, slicing a right-footed shot wide from 18 yards after Ben Tozer’s throw-in was only half-cleared on two minutes.
Mullin then went to ground in the area on three minutes, clutching his face and requiring treatment from physio Kevin Mulholland, but referee Alan Dale turned down his penalty shout.
At the other end, Charlee Adams’ wasted a good free-kick opportunity on seven minutes, shooting low and into the Wrexham wall, and Sam Barratt’s follow-up was blocked.
Elliot Lee then cleared a low cross off the line, after Ashley Nathaniel-George’s jinking run into the Wrexham area in the 12th minute.
Lee was guilty of giving the ball away moments later, allowing Kane Ferdinand to attack, but Tozer blocked his low shot.
Mullin broke the deadlock against the run of play on 29 minutes, however, heading in at the back post after Dalby and Lee had combined to release Mendy, who stood an inviting cross up.
The goal lifted Wrexham, who set the tempo better from there on, and Andre saved from Mullin’s shot – to the right of the goal, in the area, with his legs on 37 minutes.
Mullin went close again in the 41st minute, shooting early on his left foot from 20 yards, but the effort flashed just wide.
Maidenhead levelled after the break, however, in stunning style – Reece Smith arrowing a shot into the top corner from 25 yards on 57 minutes, which gave Mark Howard no chance.
Parity lasted less than two minutes, however, before Luke Young’s looping right-wing corner was met at the back post by Mullin, who headed in across goal.
Mendy battled his way inside and shot low on his right foot on 67 minutes, but Andre saved comfortably.
Wrexham then went route on in the 71st minute – Dalby heading Howard’s clearance on to Mullin, who volleyed wildly over.
At the other end, Emile Acquah’s near post header was claimed by Mark Howard on 73 minutes and Barratt curled over on his left foot in the 78th minute.
Mullin was just inches away from completing a hat-trick of headers in the 86th minute, meanwhile, but this time his effort – after Tunnicliffe flicked Tozer’s throw-in on – hit the bar.
And Wrexham rued the miss too, when McCoulsky – only on in the 85th minute – beat Howard to a long ball over the top, to poke in a late, last-minute equaliser.
Maidenhead: Andre, Asare, Clerima, Massey, Odutayo, Nathaniel-George, Smith (Panayiotou 78), Adams, Ferdinand, Barratt, Acquah (McCoulsky 85)
Subs: Beckwith, Leathers, Walsh
Wrexham: Howard, Cleworth, Tozer, Tunnicliffe, Barnett, Young, Cannon, Mendy, Lee (Davies 84), Mullin, Dalby (Palmer 75)
Subs: Watson, McFadzean, O’Connell
Referee: Alan Dale