Cron Tool visualizer is incorrect

[kb2001]

The expression: 30 1 1-7 * 4

Should result in running on 01:30 on the Thurday between1st and 7th of the month. Instead it displays that it will run on the 1st through 7th of the month, and also every Thursday. This is a common expression to run on the first Thursday of every month, but the visualizer is interpreting it incorrectly

All 5 of the cron fields should be combined using AND logic, the day of the week should not separately be combined with OR

correct:
30 minute mark AND 1 hour mark AND day of the month 1-7 AND any month AND thursday

incorrect:
(30 minute mark AND 1 hour mark AND day of the month 1-7 AND any month) OR thursday