5.4 → 5.6 linear motor only works while vehicle is moving

Hello,

I have a function that lifts the fork carriage of my forklift and it is controlled by mousewheel. It is driven by a linear motor

i have upgraded to 5.6 from 5.4.4. The function now only works while the vehicle is in motion.

my blueprint:

Any idea where i could start investigating?

Thank you!

Apparently, sleep behaviour changed opposed to earlier versions.

Before calling the linear position drive, i wake all rigid bodies of the mesh.