Incompatibilities to tmux version 3.4

[whysthatso]

I've just updated from tmux-3.3_a-7-x86_64 to tmux-3.4-3-x86_64 on archlinux, and that seems to break at least the pane-swap integration:

command swap-pane: too many arguments (need at most 0)

and i get two times this error:

size missing

This happens during layout configuration:

  layout [[
    {:left => 1, {name: :right, runbook_pane: true} => 2},
    {bottom: 1}
  ]]

[AlexanderPavlenko]

tmux/tmux#3836 (comment)
tmux/tmux#3840