Humm..
I see your point and need.
Event triggered workflows for Task-based workflows only check for changes in tasks, not in tickets.
And Ticket-based workflows currently can’t update tasks; only create new tasks.
Scheduled works could be used, but they would run at the times you set. This last could work, but it won’t be in real time; on a daily basis, for instance, you could check for that condition and then re-open your ticket(s). This is the current workaround I can think of.
Sounds like an interesting Feature Request.
I’d also suggest to submit it explaining your use case, then share the Idea link in order we could vote for it:
Freshworks Ideas | Freshworks Community
I’d also suggest to submit a support case.
Let’s wait for someone else’s approach.
Regards,