General

Diagram displays device, which is not connected to anything. The situation appears when site separation prevents displaying the device on the other end. To show connection to a device, click Show Edge Cloud
Diagrams drill-down missing. Current diagrams offer vast amount of information, which is not available through drill-downs. More drill-down capabilities are planned for future releases.
Advanced Filter Visibility. When Advanced filter is applied, and then collapsed via advanced filter button it's not clear that filter is being applied to the table, except for the visible clear filter button.
Jumphost can be activated only from support console.
TACACS may be limited to the specific maximum number of simultaneous authentication sessions, preventing discovery of all of the devices in the network. If fewer than expected number of devices are discovered, decrease bandwidth rate (like to 3Mb/s), increase SSH/TELNET session timeout (for example to 30 seconds), and decrease the maximum number of simultaneous sessions (like 40).
Inter-platform spanning-tree topology enumeration requires L2 discovery protocol to form a connection when port_id.port_priority.port_id field separation boundary is in inconsistent position between the two platforms.
Site separation - Changing "Firewall in site" and new discovery/recalculation can change site names.

Snapshots (Release Candidate)

When Discovery is stopped mid way, and then Refresh is executed, the refresh does not consider IPs with status "STOP" for the next discovery
Resource check for sufficient RAM and HDD use a sliding window. Creating a new snapshot immediately after previous one may result in a "insufficient resources" failure. In such a case, verify resources on the status page and retry in several minutes.
Visualization does not work properly in Internet Explorer. Use Firefox or Chrome.
Switching site separation to RegEx can cause issues.