The MySQL-X plugin may causes a double-free error when doing "alter instance reload tls"

One of our customer, with a large fleet of database servers, started to see sporadic double-free errors when doing “alter table reload tls;” . In a lab environment, we were able to reproduce the problem using a ASAN built (traces attached). These traces highlight the role of the MySQL-X plugin in the error. Setting “mysqlx = 0” in the cnf file removed the issue.