We have complaints about LibreOffice not behaving nicely when updating a running instance: see bug 141226.
We need to make LibreOffice react properly to Windows Restart Manager events, allowing to shutdown the running instance (including quickstart), and re-launch it again after the update.
A problem here would be a set of documents currently open in this instance: an initial command line could contain documents no more open; and other documents could be open.
This task somewhat overlaps bug 117100, where the command line of current instance is also somewhat problematic, and should be edited for the relaunch.
See also: https://www.codeproject.com/articles/772868/restart-manager-support-for-windows-application
See also: https://www.1e.com/news-insights/blogs/windows-restart-manager/