I could reproduce bug #76927 with MySQL 5.6.11, 5.6.24, PS 5.6.23 and PXC 5.6.22. For MySQL and PS UK index corruptions are silent. For PXC the test case also breaks other cluster nodes as described in this bug report.
I could reproduce bug #76927 with MySQL 5.6.11, 5.6.24, PS 5.6.23 and PXC 5.6.22. For MySQL and PS UK index corruptions are silent. For PXC the test case also breaks other cluster nodes as described in this bug report.