Just updated machine from Fedora 41 to 42.
Running libreoffice --calc from command line get lots of these
messages?
warning: parent <office:styles> does not have any rules defined
(child: <style:style>)
warning: parent <office:styles> does not have any rules defined
(child: <style:style>)
warning: parent <office:styles> does not have any rules defined
(child: <style:style>)

$ rpm -qa | grep libreoffice | grep calc
libreoffice-calc-25.2.3.2-1.fc42.x86_64
libreoffice25.2-calc-25.2.3.2-2.x86_64

Compared files in opt directory with the Fedora versions, and a
number of files are not there?

$libreoffice --calc gives lots of the message
$libreoffice25.2 --calc gives none.

Didn't see this with Fedora 41?

Also, not sure why message and <office:styles> compared to
<style:style>