Arsenal were forced to defend with 10 men for several minutes as Aubameyang left the pitch during their shock 2-1 defeat to the Seagulls, which extended their winless run to nine games in all competitions.
And it emerged after the game at the Emirates that the Gabon striker had bizarrely gone off to answer a call from nature.
But Arsenal’s interim boss Freddie Ljungberg – who was taking charge of his second game after previous boss Unai Emery was sacked last week – has defended Aubameyang.
“He ran off and came back two or three minutes later,” said Ljungberg. “If you feel bad you feel bad, it’s nothing you can change.”
He added: “I actually didn’t even notice he went off, I just saw him come back on after he’d been off for a couple of minutes.”
Sacking Unai Emery has not changed the form of the misfiring Gunners who have now gone on their worst run since March 1977.
The North London club are 10 points off the Champions League places and only five above the drop zone after a shocking performance against Albion.