This is expected behavior, as it's usually a tech connecting to the remote Host who needs to control the mouse pointer. Could you please try switching to the View only mode during the remote session and see if this works for you? You can alternate between Full Control and View Only modes without closing the window by using the toggle icon on the Toolbar or by using Alt + F12 keyboard shortcut: Alternatively, you can connect to the remote Host in the View only connection mode as described here.
In addition, please note that the Monitor Driver is meant to be used for the Blank remote screen feature only. The Monitor Driver was discontinued since our latest version 18.104.22.168 (Beta 2) and replaced with a new blank remote screen mechanism that allows adding a custom text to the remote screen when it is blanked. In case if you use one of the previous versions of Remote Utilities, i.e. 22.214.171.124 or an older version, we highly recommend you to update your installation to the latest 126.96.36.199 Beta 2 version as it contains lots of bug fixes and improvements, so it might help you in resolving some issues and improving overall performance. The latest 188.8.131.52. Beta 2 version is available for the download on this page. When updating, please make sure to update both Viewer and Host/Agent to the same version as the version mismatch might lead to performance issues or some features not working.