Ok thanks for the log, it seems that KStars is sending both RA/DEC and ALT/AZ requests at the same time which could be the cause of the problem. By tomorrow, the kstars-bleeding should be updated and you can try again. If you do, please attach the log again.
I tried the newest version in house since we have lot of clouds here.
As far as I can judge from the pointing direction , the mount is correctly tracking Dubhe after a command given from Kstars.