Said to make a scene when spotted (4)

I believe the answer is:

seen

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'spotted' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

(Other definitions for seen that I've seen before include "Spotted" , "Met - understood" , "Sighted" , "Distinguished" , "watched" .)

I've seen this clue in the Evening Standard.

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