When CIS 5.9 was released I thought that bug from 5.8 has been fixed. V. 5.5 was the last version in my machine where D+ worked, it warned about unknown files, dangerous actions and sandboxed files. 5.8 did that some minutes after installing, the it was mute.
I thought 5.9 had fixe it because I installed it with antivirus (active protection off because I use Avira AV). D? workes fine. But then I uninstalled the CAV part and D+ ceased to wprk. Reinstalling without CAV idin't make any difference, D+ lets everything though, even malware when tested.
It is a pity it does not work because it is an important part of my defence.
Edit: fixed a minor spelling error