After upgrading LibreOffice to the latest version available at the time of writing this LibreOffice does not start. Running it from the CLI shows "ERROR 4 forking process".
After little bit of debugging I found out that the problem is the updated AppArmor profile for soffice.bin. The exact location of the file is this:
That file belongs to the libreoffice-common package, a copy of a working file is here:
I was able to work around this by copying the same file from other laptop running PureOS without the latest upgrade (version 6.0.5-1) :
and restarting apparmor:
$ sudo systemctl restart apparmor