Disappointed with Apple Watch Ultra 2 being very very buggy.

I have the Apple Watch Ultra 2 and have not run into any bugs that I have noticed.

Will try and answer your questions below:

1. You can update your Apple Watch every single time by updating it from the IPhone and running the Watch app ➡️ General ➡️ Software Update.
2. Was that 13 hours of standing or is it showing 1 stand count per hour over 13 hours? This will give you a stand count of 13.
3. You cannot connect your Apple Watch to a Personal Hotspot from your iPhone. This is not a bug. Your Apple Watch is already connected to your iPhone over Bluetooth.
4.  The altimeter works by measuring the air pressure around the watch. When you start climbing, the air pressure decreases and the watch can tell how much elevation you've gained. The new feature is available in the Activity and Workout apps, and can also be added as a complication on the watch face. Not completely sure how the altimeter would reach to an AirPlane’s cabin pressure. There are other free Altimeter apps that are available in the App Store. You can get one of those and try it out the next time you are traveling.
5. Not sure what you meant by “SS” get overlayed.

Axel F.