Monaco were unable to move level on points with Ligue 1 leaders Paris Saint-Germain as Montpellier hit back to claim a 1-1 draw on Friday.
A looping 52nd-minute header from Layvin Kurzawa, allowed to stand despite suspicions of offside, looked set to give Claudio Ranieri's men three points at Stade de la Mosson.
However, struggling Montpellier, 17th in the table, levelled 16 minutes later when Milan loanee M'Baye Niang marked his first league appearance for the club with a goal.
Niang, who also scored on debut against Rodez in the Coupe de France on Sunday, saw a penalty saved by Danijel Subasic following Eric Abidal's trip on Remy Cabella, but the forward reacted quickly to slot home the rebound and earn a precious point.
Despite the presence of Radamel Falcao, making his first league start since 24 November, Monaco failed to find a winner.
The men from the Principality have now dropped points in two consecutive Ligue 1 fixtures and could be leapfrogged by Lille, who host Reims on Sunday.
PSG, meanwhile, travel to Ajaccio on Saturday and will hope to extend their advantage at the summit, which currently stands at two points.
|Southampton need three January signings, says Watson|
|Liverpool can make Champions League, says fanzine editor|
|Walsh: Hull clash crucial for Leicester|
|Toure, Aubameyang and Enyeama make shortlist for African gong|
|Docherty backs Chelsea to win two-horse race|
|Liverpool could benefit from Hyypia influence - Scales|
|Saudi Arabia name Asian Cup squad|
|Forty-year-old Cahill no problem for Postecoglou|
|Wenger criticism baffles Redknapp|
|Leicester must strengthen in window - Walsh|
|United not title contenders - Docherty|
|Koeman: Southampton youngsters will get a chance|
|Dyche empathises with Liverpool striker crisis|
|Cagliari turn to Zola|
|Rooney thanks Van Gaal for Christmas break|
|Cruzeiro offer Paulinho Tottenham exit chance|
|Carlisle´s wife grateful to Burnley|
|Katebe called up to Zambia AFCON squad|
|Cape Verde name AFCON squad|
|Finke names much-changed Cameroon squad|
|Grant omits World Cup troublemakers for AFCON|
|Blackpool striker Ranger goes AWOL|
|Allardyce relishing Mourinho meeting|
|Ashley fails to increase Rangers stake|
|Crystal Palace v Southampton: Koeman calls for focus|
|Warnock targeting striker in January|
|Chelsea v West Ham: Adrian vows visitors will attack|
|Heskey signs short-term deal at Bolton|
|Everton v Stoke City: Martinez eyes strong form|
|Juninho defends David Luiz|
|Burnley v Liverpool: Dyche defends Rodgers ahead of Turf Moor test|
|Arsenal v QPR: Wenger eyes festive momentum|
|Liverpool are growing in confidence, says Rodgers|
|Redknapp: Austin future could depend on survival|
|Martinez wants Everton consistency|
|Barca want Neymar until 2020, says agent|
|Jones undeterred by pressure of Liverpool starting role|
|Allardyce ´knows how to beat managers´ - Carroll|
|Jones playing for a new contract|
|China select Evergrande spine for Asian Cup|
|A-League Preview: Koren tips City to build|
|Khedira keen to fight for Real spot|