Steps to reproduce:

1. Have at least two hosts with set location (close enough to form a cluster in map).
2. Have a Geomap widget to display hosts.
3. Click on cluster to display hintbox.

Result:
a) Redundant space is present in cluster hintbox between close button and hosts table.

b) Close button may become unreachable if there are many hosts in cluster.

Expected:
a) No redundant space, same as it is in pin hintboxes.

b) Close button is always reachable, scrollbars appear only when hintbox doesn't fit in page.