Bug that almost doubles our visitor metrics

We created tables in Looker Studio with a few relatively simple calculated fields. Everything works fine until I try to create a calculated field for engaged users, using something like this: CASE WHEN Time on page >= 30 THEN Visitors ELSE 0 END

The metric itself works, but suddenly all the numbers in the entire table increase by approximately 1.5x, even though the time period, filters, and everything else remain the same. When I remove this engaged users metric, the numbers return to their correct values. What could be wrong here or is this some kind of bug?

Hi @TTLMikko,

Would you mind sharing the report details? Either here or in a private message.

What dimensions and metrics are used, perhaps a screenshot. Try to reproduce it with the fewest number of calculated fields, preferably just the engaged users.