I had a quick play with dronie yesterday after the firmware update. I can definitely see an improvement.
It will move backwards slightly at first before ascending to higher altitude.
I had the same problem and was worried that my 'Smart batteries' were busted as one of them would charge and the other wouldn't. After a bit of googling, I found it was by design.
Phew.
Hi All
Just got my Spark combo during the weekend, still very new to UAV and RC flying.
But enjoying the time i have had it so far.
Hope to speak to you all soon.