2 times, but 3 times they came back to win when another team led at X-mas
Remembering the 14 times the team at the top on Christmas Day didn’t win PL title
https://thefootballfaithful.com/teams-top-of-table-xmas-didnt-win-premier-league/
1992/93 – Top at Christmas: Norwich, Champions: Man United
1995/96 – Top at Christmas: Newcastle, Champions: Man United
1996/97 – Top at Christmas: Liverpool, Champions: Man Utd
1997/98 – Top at Christmas: Man Utd, Champions: Arsenal
1998/99 – Top at Christmas: Aston Villa, Champions: Man Utd
1999/2000 – Top at Christmas: Leeds, Champions: Man Utd
2001/02 – Top at Christmas: Newcastle, Champions: Arsenal
2002/03 – Top at Christmas: Arsenal, Champions: Man Utd
2003/04 – Top at Christmas: Man Utd, Champions: Arsenal
2007/08 – Top at Christmas: Arsenal, Champions: Man Utd
2008/09 – Top at Christmas: Liverpool, Champions: Man Utd
2013/14 – Top at Christmas: Liverpool, Champions: Man City
2018/19 – Top at Christmas: Liverpool, Champions: Man City
2020/21 – Top at Christmas: Liverpool. Champions: Man City.