One probing two songs missing intros — still an issue? (7)

I believe the answer is:

ongoing

'still an issue?' is the definition.

I cannot understand how the remainder of the clue works.

(Other definitions for ongoing that I've seen before include "still in operation" , "Currently in progress" , "Still in progress" , "Actually in progress" , "Continuing to exist or progress" .)

I've seen this clue in The Times.

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