Carter was booked during the Champions League game against NK Maribor
Chelsea have been encouraged by the aggressive reaction of Magdalena Eriksson and Jess Carter in the 2-0 Champions League win over NK Maribor on Tuesday.
Both players took the knee for a penalty on Tuesday – one for each team – and both reacted strongly to the decision.
But Chelsea coach Brendan Rodgers said: “The decision-making around the final penalty was a controversial one.
“It’s certainly not a rule that is any use in football.”
Former Wales winger Eriksson, 31, was booked for her actions in the latter stages of the Group E game in Slovenia but stopped her protest to point to the spot.
She then fouled Jose Marinovic’s clearance and Carter stepped up before losing her balance before scoring her second goal of the season.
Eriksson, meanwhile, was booked for furiously jumping out of the way of Tono Dones’ cross but being shown a yellow card.
Chelsea manager Rodgers added: “I don’t think I’ve seen a correct decision for a penalty so many times.”