Crossword Genius

Problem moving forward while poking behind (8,5)

Ross

I believe the answer is:

sticking point

I'm a little stuck... Click here to teach me more about this clue!

'problem moving' is the definition.
The definition suggests a singular noun which matches the answer.

'forward while poking behind' is the wordplay.
I cannot really understand how this works, but
an anagram of 'poking' is 'kingpo' which is located in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for sticking point that I've seen before include "Impasse" , "Obstacle to progress" .)

I've seen this clue in the Sydney Morning Herald.
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