sink bubbles back into air gap

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perplexed in Wisc

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Waukesha Wisconsin
In my kitchen remodel, had pro plumber install new sink. It is deeper than previous sink - Ruvati RVH 8310. Dishwasher drain connected to sink drain pipe via air gap. When draining bubbly water from sink, I am having bubbles perculate back up into air gap. Water seems to be drain fine, but bubbles aren't going down drain fast enough. Ideas?
Hey, wait a minute.

This is awkward, but...

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