Unfortunately, we couldn't reproduce the issue - Host is compatible with Sticky Notes and there are no issues with running both Host and Sticky Notes on the same machine.
Could you please clarify what version of Remote Utilities do you use? In case if you use version 18.104.22.168 or any older version, please try updating your Remote Utilities installation to the latest version, as the issue might have already been resolved in the most recent release. As of this writing, the most recent version is 22.214.171.124 Beta 2 and it's available for the download on this page. When updating, please make sure to update both Viewer and Host to the same version as version mismatch might lead to performance issues or some features not working.
Please let us know if the issue persists even after updating to the 126.96.36.199 Beta 2 version.