disabling fastboot has been helpful with this issue on previous htc models so it was a reasonable solution to check.
the main issue that i have seen across previous phone models revolves around specific geographical areas and how the weather info is polled to the device. these are isolated cases for sure and not a widespread issue.
to those who are having this issue, have you opened a ticket with HTC?
has nothing to do with the phone in my opinion since there are many people who have these models and do not have the issue.