Avg Resolution Workdays excluding statuses

Thanks Oskars, I used -Average workdays in transition status exclusion. and it worked perfectly.
The only issue we’re seeing in the report is when we drill through the issue on the new field. I’ve used a Time filter in the pages and when it’s filtered on Q4 it works fine:

But when it’s filtered to November it shows Infinity for the same issue:


Do you know what would cause this?
Thanks again
Joey