Libre office works OK provided I run it before opening Edge. If I attempt to open Libre Office after Edge is run, it doesn't open a window but Task Manager shows that Libre Office is running and using ~18% of CPU. The only way I've found to open Libre is to re-boot and use it before Edge. Once Libre Office is running, Edge can be run without affecting LibreOffice.
Thank you for reporting the bug. To be certain the reported issue is not related to corruption in the user profile, could you please reset your Libreoffice profile ( https://wiki.documentfoundation.org/UserProfile ) and re-test? I have set the bug's status to 'NEEDINFO'. Please change it back to 'UNCONFIRMED' if the issue is still present
I've reset my Libre office profile and problem seems to have ceased. Thanks for your help. I'll keep it under observation in coming weeks. Trevor