When all data points are zero in an area chart, the chart appears empty and the y-axis tick labels will all be zero. See https://issues.redhat.com/browse/CONSOLE-1749 for screenshot
Will address next sprint.
Created attachment 1711282 [details] filesystem
Created attachment 1711283 [details] network
Attached screenshot for refer, Zero data display as a line at 0 y-axis This could be Verified. Checked on 4.6.0-0.nightly-2020-08-12-155346
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