What air filter is the OP using?
Mine does the same thing occasionally since installing the k&n intake many years ago. It’s rare that it happens because I think I’ve adjusted my driving to keep it from happening. I don’t put the clutch in until im pretty close to stopping. If I put the clutch in early and coast a good distance to a stop it’s much more likely to start the hunting idle and a possible stall. I believe it’s related to the airflow over the filter. The maf is very sensative to any inconsistencies.
A good way to check for this issue is to place cardboard in your engine bay around the front of your air filter and see it it changes the behavior.
