Meherrin Footprints

I have a 2019 TC with 89000 miles. It started recently a little more often. I go into a parking lot to back in to a space. I stop, put the gear into reverse, and the reverse does knot engage. I turn the engine off, and it starts up sounding like it is " flooded." Do you know what I mean? But they reverse works fine. And if the reverse works once, it works again. If I take it to the dealer, they might not encounter the issue. I have only had this issue after the vehicle is running for a while. And it is intermittent. Good luck, everyone.