First scenario: iPad mini 5 with iOS 13beta3 installed, DEP device, enrolled: updated to Workspace One Intelligent Hub 19.07; tested various actions from Airwatch Console, everything works except for passcode change/erase (after sending the erase passcode from device command, the device is still locked with the old passcode)
Second scenario: iPad mini 5 with iOS 13beta3 installed, DEP device, erased and enrolled again: same issue, same behavior;
!!! Same scenario with an iPhone XR and XS running the latest beta for iOS 13 We do have a passcode policy, to enforce passcode in 1 hour after enrollment on every iOS device.
I too have same issue on-premise V 1811 using 1908 Intelligent Hub app on IOS 13.1 Beta 1. I am using Appleseed IT BETA, there is not version listed higher than BETA 2.
Update: Enrolled device on our UAT SAAS environment v 19.9. Clear passcode commnad worked as expected.