zsh 5.5: core dump during serial login

[Dr. Peter Voigt]

Today I upgraded shells/zsh to version 5.5 on my FreeBSD 11.1-RELEASE-p9
machine.

During a login over serial line (wired or IPMI-SOL) I am immediately
kicked out after a successful login. Syslogd shows:

<kern.info> xxx kernel: pid xxx (zsh), uid 0: exited on signal 8 (core dumped)

I immediately downgraded to zsh-5.4.2_1 and the error disappeared.

Is this a known error or should I created a ticket under
https://bugs.freebsd.org/