Shared iPad passcode problem

We are a University with Apple School Manager and Federated Apple ID setup, devices managed by Jamf Pro. Recently we've seen an issue with new users signing in to our shared iPads. They sign in with the federated account details fine, are prompted to create a passcode as normal:

Then, when logged into the iPad, if the screen locks then the prompt to enter their passcode is not the same as the normal federated one, its a numerical keyboard only, so they have no way of entering the alphanumeric passcode they just created:

I've found that resetting the users passcode within School Manager resolves the issue. But its not a workable solution to have to do this for an entire class during a teaching session. Has anyone else experienced this issue?