Problem confronting the artist? (5)

I believe the answer is:

poser

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'problem' is the definition.
(I know that poser is a type of problem)

I can't explain the remainder of the clue.

(Other definitions for poser that I've seen before include "Puzzling problem" , "Puzzle using ropes" , "Spore raises a difficult question" , "Show-off" , "Puzzling question about ropes" .)

I've seen this clue in the Evening Standard.

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