JL-19: "TimerTriggerChecker" seems to trigger incorrectly

I have a job with a the following trigger condition

#working hours, weekdays: 5 min
H/5 7-20 * * 1-5

# rest of time - once an hour
## out of working hours
H 20-23 * * 1-5
H 00-06 * * 1-5

## Sa/So
H H * * 6-7

All lines contain (at least) one 'H'.

But the job gets flagged by "JL-19: TimerTriggerChecker". To me this seems incorrect.