The issue is that the latest release of the Chrome and Edge browsers (which have the same code-base) no longer support the Secure Lockdown > System Lockdown > "No Desktop" option. If this option is disable, it will behave as expected. We are trying to determine a work-around to this, but there is no guarantee one will be found. If we find one, a new release of Secure Lockdown will be posted. We do not have a time-table for this, currently.