A closed throttle (or not open enough).
A bike in this condition compresses the forks (and tyre for that matter) as the weight is moved onto the front wheel.
The ideal condition is enough throttle to give even weight distribution front and rear. You generally get this when there is enough throttle to drive the bike through the corner. A little too much throttle is better than a too little.
I thing I got your point
slowing down before the turn and progresive turning of the throttle while turning