And an issue where if not regularly rebooted, preferably with staggered (by days) reboots, they lose all power, including instrumentation and controls, after 248 days of uptime.
Additionally an Airworthiness Directive from 2020 requires, at least in europe, to reboot more often than 51 days due to stale data in common core system, with various network packets being dropped and system showing incorrect data to pilots.