Hi!If you are waiting on the connection to happen automatically that is not working in the betas. You will need to turn hotspot on, look for the wifi name and select it on your iPad.
Yes I have the same problem.. using my iPhone as a base/router then sharing Wi-Fi by tethering to my iPad Pro 12 doesn’t work by Wi-Fi but tethering a Windows computer to my iPhone works (iPhone as base/router) without problems. It seems to be iPad issue or iOS to iOS issue... (haven’t tested in detail though)