Hi, many thanks for creating this project.
In this pull request, I have upgraded your solution to use Unity 2019.3(.7f1) and ARFoundation 2.1.8. I have also tweaked the placement of andy so that he's always perpendicular to the plane (even a vertical one) while looking towards the camera. I used Samsung Galaxy S8 for testing.
Hi, many thanks for creating this project. In this pull request, I have upgraded your solution to use Unity 2019.3(.7f1) and ARFoundation 2.1.8. I have also tweaked the placement of andy so that he's always perpendicular to the plane (even a vertical one) while looking towards the camera. I used Samsung Galaxy S8 for testing.