Selection Stuck in "Processing" Status via API

Do you still have the issue? Usually, updating a catalog or creating a selection gets them stuck in a "processing" state but that's only until you refresh or open the catalog in a new browser tab. 

Can you test to see if you're able to reference the selection in templates? Ah, looking at your selection name - you have spaces between the words and you might not be able to reference it. The liquid to initialize the selection will likely break. 

Try doing the same thing but replace the spaces with dashes or underscores.