The teenage striker earned a late booking for forcefully striking the ball against an advertising hoarding when a decision did not go his way.
But Jackson told Leeds-Live: "You don't have to prepare it with Deano. Deano's a fiery character, I don't like to quash that in him. He's got an edge to him and how he plays - and I like that in his personality.
"Yes he gets frustrated at times and we have to curtail it but his hunger to press and work hard and his hunger to score goals is really apparent.
"When he probably feels he doesn't get those chances or have the balls he needs then he gets a a little bit frustrated, but he knows he's got to manage that.
"Overall I was pleased with how he played, how he pressed and I'm not too worried about him getting frustrated.
"Listen, I like his character - I always have done since we signed him from Everton and I think it can only get better."
Against Tranmere, 17 year-old Dean was being marked by 39-year-old Peter Clarke and 34-year-old Nathaniel Knight-Percival in central defence.
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