Incorrect mask in RTCP slice picture ID
Summary
https://datatracker.ietf.org/doc/html/rfc4585#section-6.3.2.2
https://gitlab.com/wireshark/wireshark/-/blame/master/epan/dissectors/packet-rtcp.c?page=7#L6567
I think, wrong mask. Must be a 0x0000003F