I have only experienced issues with my Google gen 2 wireless charger and the other wireless charger that Google approved on the Google store last year when I have a magnetic ring case on my XL 9 pro. If I take off the case it works fine. I did purchase the case from Amazon and it's not the official Made for Google magnetic case. I did however order me an official magnetic case from the Google store the other day which I hope works without issues.
The new Pixel 9 Pro XL seems to be giving some users issues with wireless charging. Posting on sites like Reddit and Google's forums, a variety of Pixel 9 Pro XL buyers have complained that the new phone experiences intermittent issues with wireless charging via different chargers, including Google's in-house wireless charger.