Thanks for this report; however, it’s very easy for us to lose track of forum posts. Please file a bug as noted in our FAQ :
If you’d like to open a line of communication with us about this issue, feel free to also post in GitHub issues. GitHub issues are unofficial but allow us to follow up with you if and when we can address this issue: Issues · Unity-Technologies/arfoundation-samples · GitHub
It’s basically impossible for us to track forum posts