I created a Survey123 with some dates. The date validation is .<= now() but in IE11, it does not validate properly. If I put in 2017-12 it shows as invalid. This works in Edge, Chrome, Safari and on both the iPhone and Android.
constraint column: .<now()
constraint_message: Date must be greater than today
required: yes
appearance: month-year.
Hi Norman - we have raised this as a bug and will look to address it shortely
Thanks
John