The players seemingly went straight down the tunnel instead of joining a lap of appreciation, amidst boos from the home crowd at full-time.
Frank acknowledged the players' frustration, saying they are “doing everything they can” and downplaying the incident as a “small issue”.
The defeat marked Tottenham's third Premier League loss of the season and highlighted a poor home record, with only one win in five league matches at home.
Frank admitted Chelsea were the better team on the day and emphasised that his new front four needs time to gel and build cohesion.