I see, you had misunderstood the problem, click the small square under the result table, when it is selected, the square has background colour, no background colour when it is unselected, the issue is happen when the first result is selected, see from the picture
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (OpenShift Container Platform 4.6 GA Images), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:4196
Created attachment 1645791 [details] no graph tip for the 2nd metrics result