Unable to switch model and wrong cauculation in energy usage

First, I cant find the switch model button.

Secondly, even though the chat box said I was using the memo-1 bot, the energy usage says I was using gpt-5.2 all the time! That wasted me a lot of energy.

Thirdly, I only created one practise test but the system said I created 5 of them and used a lot of energy.

Overall, even though the new release is good. There are still so many bugs.