Steps to reproduce:

1. Create custom check: UserParameter=vmware.snapshots[*],/usr/bin/pwsh -Command echo $1 $2
2. Test with strace -s 16384 zabbix_agentd -t vmware.snapshots[hel,lo]
3. If pwsh is changed to bash -c "echo $1 $2" it works correctly

Result:
write(1, "vmware.snapshots[hel,lo] ", 45vmware.snapshots[hel,lo] ) = 45
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7fef1da6ac10) = 485649
close(4) = 0
read(3, "hel\n", 4095) = 4
read(3, "lo\n", 4095) = 3
read(3, 0x7fffef948450, 4095) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
— SIGCHLD {si_signo=SIGCHLD, si_code=CLD_STOPPED, si_pid=485649, si_uid=1000, si_status=SIGTTOU, si_utime=0, si_stime=0} —
read(3, 0x7fffef948450, 4095) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
— SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} —
rt_sigreturn({mask=[]}) = -1 EINTR (Interrupted system call)
close(3) = 0
kill(-485649, SIGTERM) = 0
wait4(485649, [\{WIFSTOPPED(s) && WSTOPSIG(s) == SIGTTOU}], WSTOPPED|WCONTINUED, NULL) = 485649
wait4(485649, 

And hangs there.
Expected:
vmware.snapshots[hel,lo]              [t|hel lo]