Error on download attachment - emclient 8.0

if I try to download a large attachment with a slow connection and on the dialog with the download progress bar I click on “cancel” button the operation is never canceled.
After a few minutes the program is still stuck on that window. The only solution is to disconnect the internet connection and wait for emclient to stop the operation due to a lack of connection.

I use 8.0.2420 (904a39d) version

For issues with testing beta versions, you can send your feedback to testing@emclient.com.

Before you do that, can you upgrade to the latest beta version in the Release History. It is possible that this issue has already been fixed.