Thanks, I need to have a look again in that case.
You mean this?
If so, that makes sense as its all the way to the right. And, yes, that is difficult to see clearly. I hadn’t even spotted it was moving. Colouring that ball green, or yellow would greatly help its visibility. That and making it bigger since there is so much space under it.
It looks much clearer on a black background, as this image shows.