Can't close sticky notes with Escape after update

After updating my Adobe Acrobat Reader, there appears to be a problem. Whenever I open a new Sticky Note and close it with the "Esc" button on my keyboard, the only thing that changes is the comment's color from blue to yellow for whatever reason. However, it doesn't close the comment like it did before the update. How can I change this so it returns to the way it was before the update?