Changes to turn block?

So I have a merge cube space with a planet covering the cube.

I had coblocks set up and the Planet would spin on it’s axis using the turn block

turn “Planet” Clockwise by 360degrees in 15 secs

This had the desired effect until I came to revisit my space today and now the planet rotates around a point rather than on its axis?

However another space using the same code still has planets rotating on their axis correctly?

Space that works (ignore Saturn)

Space that has issues

Any suggestions?