What running time were you expecting? From your expression I read that the node should trigger an execution at every hour and 20 mins, between the 6th and 20th of every month, including, and from Mon-Fri. Is this what you idealised?
Exactly, that’s what was supposed to work. But after the update it only runs every 20 minutes and disregards everything else like 6 am to 20 pm and Monday to Friday.
See below the executions that should run from 6 am to 20 pm
I made a mistake due to lack of attention when building the cron expression, the correct expression would be “20 6-20 * * 1-5” (At minute 20 past every hour from 6 through 20 on every day-of-week from Monday through Friday).
I noticed in your understanding where I noticed my mistake, thank you!