Ah, I forgot to mention: the resize -if the terminal-window is smaller- will still happen, but as long as the two sessions are operating on a different window they can be of different size.

I think I'm missing something.

Terminal A: 300x10 lines (long across, but short) Terminal B: 120x30 lines (standard new terminal size)

I have a tmux session running in A; I open terminal B, and attach to it with -new-session. My first pane is trimmed to the height of Terminal A.

If I do prefix-c (create new pane), the new pane is now the size of Terminal B - hurray!

But if I open Terminal C, which is yet another size, and attach to my existing session, it resizes every pane in Terminal B to the size of Terminal C; and when I disconnect from Terminal C, those panes do not appear to switch back to what they now should be, unconstrained by Terminal C.

(If I didn't explain this clearly, I can provide some screenshots later.)

> But if I open Terminal C, which is yet another size, and attach to my existing session [...]

I might be misunderstanding, but could you not use `tmux new-session -t 0` again for the third terminal?

> and when I disconnect from Terminal C, those panes do not appear to switch back to what they now should be, unconstrained by Terminal C.

Odd. Unrelated to your earlier issue, but that's not what I'd expect or am seeing when I try to reproduce is locally.

you need to turn on aggressive resizing.

Aha, thanks!

(Also, good to see you again, digitally - how's your hemisphere?)

Pretty good; working from a co-working space here. Just bought an apartment.