Easter problem? (6)

I believe the answer is:

teaser

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'easter problem?' is the definition.
'teaser' can be an answer for 'problem?' (I've seen this before). I am not sure about the 'easter' bit.

'easter problem?' is the wordplay.
'problem?' is an anagram indicator (I've seen 'problem' mean this).
'easter' anagrammed gives 'TEASER'.

Can you help me to learn more?

(Other definitions for teaser that I've seen before include "Riddle" , "One who annoys people or cards wool" , "Introduction to arouse curiosity" , "One who pulls someone's leg" , "Hard question" .)

I've seen this clue in the Evening Standard.

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