Original trigger: (File not modified & (saturday or sunday | anything before 8 am | anything after 6pm) )

{host.domain.com:vfs.file.time[/var/log/messages].fuzzytime(3600)}

=0 & (

{host.domain.com:vfs.file.time[/var/log/messages.log].dayofweek(0)}

>5|

{host.domain.com:vfs.file.time[/var/log/messages.log].time(0)}

<080000 |

{host.domain.com:vfs.file.time[/var/log/messages.log].time(0)}

>180000)

Isolated it further down: (File not modified & anything before 8 am )
host.domain.com:vfs.file.time[/var/log/messages].fuzzytime(3600)}=0 &

{host.domain.com:vfs.file.time[/var/log/messages.log].time(0)}

<080000

If I do the same line with 060000 it works.
host.domain.com:vfs.file.time[/var/log/messages].fuzzytime(3600)}=0 &

{host.domain.com:vfs.file.time[/var/log/messages.log].time(0)}

<060000

I am not sure if this is a bug in the test expression or if it effects all trigger evaulations.