The test assumes that all apiservers are in sync but they can be delayed significantly.
"should prevent Ingress creation if more than 1 IngressClass marked as default"
is the test
Checked latest CI test and didn't see the flaky any more.
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, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.