FreeBSD hangs on reboot on DigitalOcean

My FreeBSD droplets on DigitalOcean used to hang on the following line when rebooted:

Timecounters tick every 10.000 msec

I am not sure about this, but the problem might be related to the hostname I gave to the droplets using DigitalOcean’s web interface.

It appeared seemingly reliably when naming them like “abc-def”, but disappeared when naming them “abcdef.local” or similar, i.e. avoiding dashes and using a domain name.