Sounds like they changed the calculator in this new 2.0.5 version. Exactly what we were looking for
And, more interesting: the keyboard design has been changed, with some new options (like the possibility to see the letters of a password instead of ****) and it seems to me that the letters you type are refreshing more quickly... But maybe it's only an impression? No "flash" of the keys would have been much better anyway!
Like troll said : the joke goes on...