Applescript "current slide" bug Keynote 6.2

I have found a bug in the latest keynote 6.2

The applescript "current slide" is not returning the correct slide when the presentation is in play mode. It is returning the last active slide before going to play mode. This was working fine in Keynote 5.x

I have tried to work around this without any success including filing a offical error report. All help is appriciated.

-- NOT WORKING IN 6.2

tell application "Keynote"

--1. start script, 2. Go to keynote 6.2 and play a presentation , 3. Go to next slide 4. Wait the 10 seconds you will find that the output is the incorrect slide

delay 10

return slide number of current slide of front document

endtell

-- WORKING in 5.x

tellapplication "Keynote"

telldocument 1

return (slide number of «class KnCS»)

end tell

endtell