That bug had no fixes, and it’s still a problem for the Pixel 8 Pro. In an update to an existing official issue tracker thread, Google support has stated that the back gesture bug will be fixed ...

the Google Pixel 8, Pixel 8 Pro, and Pixel 8 Fold. The Pixel 8 Pro comes with the powerful Google Tensor G3 processor, amazing cameras, vibrant displays, and years of updates, starting with ...