I preordered mine the instant preorders opened, but I won't have it for another week or two.
I can tell you my Pixel 2XL running 9.0 & Oct patch (the identical OS as the 3XL) works with everything DJI just fine. There is no logical reason at all the Pixel 3XL would have issues - better hardware, identical software and OS. Personally I wouldn't worry about it.
I have a Pixel 3 Xl and the DJI app has never crashed once. Check your cables. I always use the USB A cable slot under the controller. That solved a few issues when the M2 first came out so I just stuck with it since it's been flawless since.