I'm a new tmuxp user (have been using tmux for some months and decided to give a try to tmux session managers) and it doesn't focus on the proper window at all. I've tried several different combinations and none works. My last try was:

session_name: barao
windows:
- window_name: spare
  panes: []
- window_name: git
  focus: true
  start_directory: /home/vinipsmaker/Projetos/blinktrade/barao-gateway
  panes:
  - git status
- window_name: build
  start_directory: /home/vinipsmaker/Projetos/blinktrade/barao-gateway/build
  panes:
  - '#make -j5'
- window_name: services
  start_directory: /home/vinipsmaker/Projetos/blinktrade/barao-gateway/tools
  panes:
  - '#./dumb_authenticator.py'
- window_name: journald
  panes:
  - '#journalctl SYSLOG_IDENTIFIER=blinktrade-barao-gateway -o json-pretty -f'

Window services was end up being the window focused once I load the session. No idea why this happens.

My system:

• ArchLinux.
• tmux 2.6
• tmuxp 1.4.0