Tooltip position on iPad not working

I have noticed that on ipads the tooltip position does not always sit next to the area it needs to.

My clickable icon images are small (30px x 30px) so I know they aren’t affecting the position of the tooltips.

Works fine everywhere else.

But on ipads the tooltip appears top left of the screen rather than next to the clickable icon.

Do you know of an error that would cause this? Is there anything i can do to make sure tooltips show up where they need to across devices?

Thanks very much!