Has anyone else run into an intermittent issue in Outlook 2013/16 when KAV is installed where clicking on an item in your inbox will create a draft? 

This issue doesn't happen on all users or even at all times for affected users, but when it does happen, the only way to stop it from happening is to disable the AV plugin, even then, that doesn't fix the emails that were converted to drafts, only stops it from happening going forward (or at least until KAV re-enables the add-in).