It looks like you're using Mixpanel. Please see this doc:
https://docs.growthbook.io/guide/mixpanel Using JQL with Mixpanel has limited support because Mixpanel has deprecated JQL itself. We, following Mixpanel's instructions, recommend exporting data to a warehouse to avoid more issues like this down the road.
Our engineers are investigating this issue, but you'll likely continue to face problems using Mixpanel directly.