The Check for Updates feature does not respect the channel. On first run, or within 6.4.7, in any LibreOffice application use Help, Check for Updates. The dialog will offer 7.0.3 as an update. This should not be happening. If I install and use the "Still" version then I don't want to be offered the "Fresh" version immediately upon opening it or every time the check for updates is run. Perhaps an option within the updater to offer the Fresh version IF it is set, but it should not be recommended for all users. Even the download page doesn't recommend the Fresh version for most users, so it shouldn't be an encouraged update for the non-technical users who want the most stable supported version.
LibreOffice has 6.4 has reached its EOL, that's why users are being suggested to install the latest 7.0 release.