So do a simple quick test. Download a clean new archive with Miranda. Unpack it somewhere. Run it. Add new test profile. Using "Available component list" from main menu, add FltConatacts plugin and maybe AddContactPlus too, to be able to easily add fake contacts. Create/add some fake test account, maybe jabber like I did on provided GIF. Add one, or two test contacts and try to make them float. If that will work then it will tell us that sth in your configuration could interfering. Additionally to that, post an actual VersionInfo from your normal Miranda