Thanks! Yes so here is a good example: https://www.newtondesign.co/timmy-shot-me
You'll see on desktop computers, or android mobile devices the start in the scrolling header renders as it should. But when you look on an iOS device, apple swaps that for a horrible emoji! lol.
I've had a chat with a friend how says it's probably not possible to fix. So it might very well be I need to just remove the star shape which will be a shame.
I've put in a request for the ability to add an image to the scrolling bar, then we can add our own custom symbols etc.