Four days earlier than their Champions League zone-final, first leg at Villarreal, Bayern put in a strong overall performance on the street.
However, there can be outcomes for Bayern who in brief had 12 players at the pitch after a mistake following a overdue double substitution.
"We drew the referee's interest to the truth that Bayern had 11 outfield players on the pitch," Freiburg director Jochen Saier told 'Sky'.
"That became weird, I haven't seen that earlier than."
Freiburg need to hotel a proper grievance for there to be repercussions for Bayern.
Referee Christian Dingert mentioned the incident - which he described as a "absolutely pressured state of affairs" - in his fit report and the official instructed Sky: "Now the DFB (German Football Association) ought to determine."
Under league policies, such a breach of the substitutes policies should see the result being reversed.
When Niklas Suele and Marcel Sabitzer, who later scored, both came on within the 86th minute, handiest one participant got here off, leaving Bayern with 12 men on the pitch for 17 seconds.
"There became the bizarre scenario," admitted Bayern educate Julian Nagelsmann.
