Cover's upset Spice Girl - it's problematic (7)
I believe the answer is:
dilemma
'it's problematic' is the definition.
(a dilemma is a problem)
'cover's upset spice girl' is the wordplay.
'cover' becomes 'lid' (lid is a kind of cover).
'upset' says the letters should be written backwards.
'spice girl' becomes 'Emma' (member of the Spice Girls).
'lid' back-to-front is 'dil'.
'dil'+'emma'='DILEMMA'
(Other definitions for dilemma that I've seen before include "Difficult decision" , "Awkward situation" , "Difficult situation - may have horns" , "embarrassment" , "tricky position" .)