Prob belongs under erlang but here goes

> iex -S mix
Erlang/OTP 23 [erts-11.1.7] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [hipe]

Interactive Elixir (1.11.3) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> :observer.start()
:ok

So far so good.

Observer docs indicate that to shutdown:

Module

observer

Exports

start() → ok
OTP R15B

Starts the Observer GUI. To stop the tool, close the window.

Say no more, so I go ahead and close the window, but the app remains on the dock.

Right click app on dock and click Quit, nothing happens.

Run :observer.start() again now that window is closed, nothing happens.

Force quit the erlang app, I get the following

iex(2)> 
13:28:01.365 [info]  SIGTERM received - shutting down

[1]    70302 killed     iex -S mix

Does this mean the erlang macOS app I see in dock is the actual iex session, not the observer? Or does it just mean that iex session process is linked to observer process?

Expected behavior behavior: on window close, tool gets stopped, app removed from dock, iex receives message and keeps running. Then, in same iex session, on second :observer.start() call, tool starts anew with app in dock.

Any ideas how to fix?