A customer has noticed they're unable to filter a Report by more than 1 country using the Report Builder. This is problematic as they need to add in over 100 countries onto the Report, so will have to create separate Reports for just 1 email campaign.
Additionally, this is a free text field on the Report, even though 'Country' is in fact a drop-down list, so really it should be changed to a drop-down option whereby customers can then just tick on the options on the Report (so it's applying X country AND X country AND etc.
The latest release includes a multi-select filter for the country field. This release is currently being rolled out so customers should start to see this update over the next few weeks.