I like to use this top for my osc/wireshark question, if that is ok.
My wireshark does not recognize my udp packets as osc packets. When I select an osc packet and want to set "Decode as", I can only select for tcp ports that it should decode the packets over the specific port (say 57120) as osc. For upd packets (and this is sent by Tidal), I can't choose to decode it as osc packets.
In general I see the packets (even if a bit cryptic):
on Fedora GNU/Linux, apparently that's handled via a special group
$ tshark
...
tshark: Couldn't run /usr/bin/dumpcap in child process: Permission denied
Are you a member of the 'wireshark' group? Try running
'usermod -a -G wireshark _your_username_' as root.