Again, I honestly don't know if this is a bug, or just game play. I'm running version 0.05
The secret word is PESKY
I guess the word EASES. The first E is "right letter, wrong place". The first S is "right letter, right place." The second E and the second S are both unmarked.
In version 0.02 , the second E and the second S were both marked "right letter, wrong place".
I don't know which is your preferred / correct behavior. But it changed.