approx(Ans) oddity

[BruceH]

Thanks for the answers. It seems there is at least one definite bug and a second, possible bug.

Firstly, I can repeat the issue by:

1. reset the calc (On+Apps+Esc)
2. go into CAS and put 6 on the stack
3. go back to Home and put 3 on the stack
4. press ≈ Ans (to get approx(Ans)) and the result is 6 not 3
   

This is what I'm calling the possible bug because I feel that functions selected from the keyboard in Home mode, including ≈, should only be affected by whatever is set in Home. After all, SIN gives you SIN() in Home mode but sin() in CAS mode.

Now

1. reset the calc (On+Apps+Esc)
2. go into CAS mode and verify the stack is empty (don't add anything to it)
3. go back to Home and do approx(Ans)
   

and you still get 6. This is the definite bug - both stacks were empty.