(re)connected tmux sessions' windows overlap existing fullscreen windows in the same OSX space
iTerm2 currently pops up new tmux windows after session (re)attachment in front of the previously focused full-screen terminal, effectively stacking two full-screen windows in one space, with only one being the "primary" owner of that space.
I have to manually unfullscreen the new tmux window (Cmd-Enter) and re-fullscreen it to get it to migrate into its own OSX space.
After that procedure, making new windows in that tmux session using Cmd-N allocates them into new Spaces as expected (and like most other OSX apps).
I have "Native full screen windows" enabled, and all profiles including 'tmux' are configured to be fullscreen.
iTerm 2.9.20160131-nightly OSX El Capitan 10.11.3 com.googlecode.iterm2.plist