Hi @nickonebox,
Thanks for your response, I am not sure why this is happening on the iPad lower iOS version, it might be some update made in iOS/Safari, however on a newer iPad running iOS 12 rendered the layout as expected: Image 2020-05-31 at 10.20.3...
So it seems to be device dependent on that particular styling. Sometimes having Filters or Transitions set can cause resets in z-index during a transform, it could be this is happening on the earlier iOS/Safari version is running.