Comment 4 for bug 1692745

Confirmed on PXC 5.6 as well:

Node2:
May 30 02:51:01 localhost mysqld: 2017-05-30 02:51:01 911 [ERROR] Slave SQL: Could not execute Delete_rows event on table fk.parent; Cannot delete or update a parent row: a foreign key constraint fails (`fk`.`child`, CONSTRAINT `fk_parent` FOREIGN KEY (`pID`) REFERENCES `parent` (`ID`) ON DELETE NO ACTION ON UPDATE NO ACTION), Error_code: 1451; handler error HA_ERR_ROW_IS_REFERENCED; the event's master log FIRST, end_log_pos 160, Error_code: 1451
May 30 02:51:01 localhost mysqld: 2017-05-30 02:51:01 911 [Warning] WSREP: RBR event 3 Delete_rows apply warning: 152, 56
May 30 02:51:01 localhost mysqld: 2017-05-30 02:51:01 911 [Warning] WSREP: Failed to apply app buffer: seqno: 56, status: 1
May 30 02:51:01 localhost mysqld: #011 at galera/src/trx_handle.cpp:apply():351

Node3:
May 30 02:51:01 localhost mysqld: 2017-05-30 02:51:01 936 [ERROR] Slave SQL: Could not execute Delete_rows event on table fk.parent; Cannot delete or update a parent row: a foreign key constraint fails (`fk`.`child`, CONSTRAINT `fk_parent` FOREIGN KEY (`pID`) REFERENCES `parent` (`ID`) ON DELETE NO ACTION ON UPDATE NO ACTION), Error_code: 1451; handler error HA_ERR_ROW_IS_REFERENCED; the event's master log FIRST, end_log_pos 160, Error_code: 1451
May 30 02:51:01 localhost mysqld: 2017-05-30 02:51:01 936 [Warning] WSREP: RBR event 3 Delete_rows apply warning: 152, 56
May 30 02:51:01 localhost mysqld: 2017-05-30 02:51:01 936 [Warning] WSREP: Failed to apply app buffer: seqno: 56, status: 1
May 30 02:51:01 localhost mysqld: #011 at galera/src/trx_handle.cpp:apply():351