Howdy Davide,
Thank you for bringing this to our attention. I would actually consider that a bug in our plugin. Typically when you do a search we preserve the view that is being searched from, so if you search in Month view the results returned will be in Month View. In this case you are searching in Past but getting the results in Upcoming, and that’s a bug.
I am logging it for our developers to prioritize and fix. We do bugfix releases quite often anymore, I could see this likely getting fixed within 1-2 months. Once its fixed all you will need to do is update the plugin and this will be working as expected.
Does that all make sense and answer your questions? Cheers!
– Brook