the server is going to UTC time, ONLY when the first time a client is connecting and the repacking of the jars (in server/catalina/localhost) is starting.
but in 5.2.2 in our case, always switches back to CET time, when the download of the first client, was finished.
In 3.5 indeed we had sometimes, that the server was hanging in the UTC time and did’nt switched back. only a restart fixed this.