Maneuver node marker jumping

[cicatrix]

I set my maneuver node and everything seemed fine, but when I started rotating my craft towards the node the blue marker on the navbal started 'dancing' (jumping back and forth across the navball) and also the dV of the burn changes in range 800-2300 m/s. Is it a glitch of sorts or I am missing something?

NO RCS or engines are turned on - just reaction wheels.

[Anquietas314]

O.o how large is the ship? I've seen something similar happen with large ships, but only at much smaller scales (at most a few m/s of a large burn). Post a screenshot of the craft, orbit and maneuver node.

[vexx32]

If you're in very high orbit, you might see something like that, but it is quite odd.

[JTpopcorn]

Ive had this happen several times normally it means

a. ship is long and engine is moving independently

b. Ultra Precise Manuver wait until it stops rotate then wait for it to stop again.