Boinctasks shows "download in progress" as "Download error" on boinc manager 8.0.0 beta downloaded from https://github.com/BOINC/boinc/releases/tag/client_release%2F8.0%2F8.0.0 (https://github.com/BOINC/boinc/releases/tag/client_release%2F8.0%2F8.0.0)
(https://i.imgur.com/Qz0wOiu.png)
Added to the todo list.