In the second to last episode where Uncle Phill has his 50th birthday, when Jazz comes, you notice he is wearing different glasses. Then when it shows Uncle Phill throwing him out of the house, you notice he is wearing his usual sunglasses
I remember reading somewhere (might have been on Wikipedia), that the scenes where Jazz is thrown out of the house is the same scene every time they use it. They just filmed it once, then reused each time.
That would explain minor details like that.
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