Unfortunately, despite being labelled as HUD compliant it is most definitely not. The HUD display has now got double vision, the windscreen appears to lack the polarised filter layer needed for correct display.
Was hoping one of the forum, ideally one who owns a HUD equipped Ioniq 5, would be able to post a picture of the windscreen information sited in the bottom corner of the glass - I need to start the complaints process armed with as much information as possible!
Here's mine after replacement:
