Dear Comodo-Team,
after I updated CIS to latest v12.0.0.6818 via the automatic update mechanism, Im faced with a bug, which I already had exactly one year before:
https://forums.comodo.com/install-setup-configuration-help-cis/lost-connection-cis-dragon-browser-t122083.0.html
In that time, it was fixed in a beta version of v11. In the original post you should find all important information.
The bug exists now on my notebook and also on my desktop pc, so it is definitively not a single phenomena. Both running with Windows 10 Pro v1809. There is still a little theoretical possibility that the bug is caused by a little windows update, because Windows is updating in the background and I dont use Comodo Dragon every day.
However, I predict that you will recommend me to reinstall CIS, but for me it is not a solution to reinstall CIS every time the bug is coming back.
So it would be wonderful if you can investigate this issue and eliminate this bug forever 
Thank you very much for your good support and awesome security product