I will try and explain it a bit better, you can forget master and slave cylinders this is an i-shift, you can also forget engine being cold.
With an i-shift when you come to a junction or anything while driving that entails stopping the box automatically drops down the gears and ends in first, you then stop and put your foot on the brake and wait to pull off OK ?
Its while waiting that the engine shudders (only now and again) before moving off. Tick over seems OK at about 750rpm, and doesn't fluctuate when it shudders,however, if i whip it into neutral as its shuddering it stops.
To me it sounds like its trying to move, although there is no creep .