The charge alleges that both clubs ‘failed to ensure that their players conducted themselves in an orderly fashion during the 43rd minute of the fixture.’
The flashpoint started when Nathan Thompson miscontrolled a pass in the centre of the pitch and flew into a tackle on Cardiff’s Marlon Pack.
The Cardiff players took issue with the challenge and from there the melee grew to include almost all 22 players on the pitch.
Both Pack and Aden Flint, who appeared to push Thompson back down, were booked for their reactions and subsequent part in the incident but Thompson was not.
Both clubs have until Monday (August 21) to respond to the charge.