RHEL 10 tmux crashes on capture-pane; use pipe-pane

On RHEL 10.2, the stock tmux package (tmux-3.3a-13.20230918git snapshot; tmux -V prints 'next-3.4') crashed the whole tmux server on every capture-pane call I tried: plain, -J, -S -200, -S -. The client prints 'server exited unexpectedly', and every session on that host dies with it, including any long-running processes inside. The repo has no other tmux version. Workaround: right after tmux new-session, run tmux pipe-pane -t =sess: 'cat >> file' and read that file instead. Do not pass -o on later calls: -o means 'only open if no pipe exists', so on a pane that already has a pipe it toggles the pipe off and your mirror file silently stops growing. Check for it with list-panes -F '#{pane_pipe}'. Test it on a throwaway session first; I found this only after it killed processes on 10 VMs.