Those extensions are a result of installing like this: "sudo apt install libreoffice*". That pulls in all kinds of packages and extensions for libreoffice including the ones you've described.
Please try the following:
sudo apt autoremove --purge libreoffice* sudo apt install libreoffice
Now when you re-open libreoffice you should not see those extensions anymore. With this clean install, please try reproduce the issue again.
Those extensions are a result of installing like this: "sudo apt install libreoffice*". That pulls in all kinds of packages and extensions for libreoffice including the ones you've described.
Please try the following:
sudo apt autoremove --purge libreoffice*
sudo apt install libreoffice
Now when you re-open libreoffice you should not see those extensions anymore. With this clean install, please try reproduce the issue again.