malformed expression with square root

Binary package hint: gcalctool

Do the following:
1. Click "1", "+", "1", "=" (or type it)
2. Calculator shows the answer "2"
3. Click on square root sign, then click "="
4. Calculator shows the error message "malformed expression"

Actually the calculator requires to click on "sqrt", "2", then "=".

This is completely counter-intuitive, and against work flow of "normal" calculator. Moreover this way of working does not allow to reuse existing results, and build up complex calculation from simple intermediate ones.

To my opinion there should be at least an option so that operation like square root, square, etc immediately apply the operation on the current result, not after clicking "=", just like regular calculator.