The message means your ship is on jump shock, it'll stop after a while as the ship recovers from the jump.
I can exclude this: my ships were stationary, next the jump point, for several days.
It can also be poor crew training level that results in this.
Training is above 50%, and grade ranges from 10% up to 21%.
Attached the battle and the ship design.
Range, in the first row of the events, goes from 0 to 1,377 km.
I have detached and stopped the ships whose shield was below 10%, to let it recharge, before sending back to follow the aliens.