I saw the Near-IR image of Jupiter JWST took and opened to the public yesterday.
In the image, There is a shadow spot of Europa next to the great spot of Jupiter.
I compared when the same spot was positioned on the Jupiter, but I never found it.
However, the similar spot is positioned at 15th July 20:00(UT). It's a future from now.
Why I use 'similar' is that Jupiter's other moons, Thebe and Metis have different positions with JWST's image.
I suggest you to check orbits of Jupitor's moons are correct or not.