emacs opens a new instance instead of focusing existing one

[dangom]

When activating Emacs, spacehammer opens a new instance instead of focusing on an existing one.
I'm using the default config and a vanilla emacs setup.

My emacs 28 was installed by building it with build-emacs-for-macos, and symlinked to /Applications/Emacs.app.
I open emacs by running emacs &! on my zsh.

Is there anything suspicious in my setup that could lead to this issue?
I do have a server running and can connect to it via emacsclient.

Other potentially relevant info:
Hammerspoon latest (0.9.86)
spacehammer latest (81ca4e0)
MacOS Catalina 10.15.7

[agzam]

What does running open -a Emacs from the terminal do for you? Does it activate existing instance or opens a new one?

[dangom]

Yes, it opens a new one.

[agzam]

In that case this is neither a Hammerspoon, nor a Spacehammer issue. This is OSX thing, perhaps check if the app is properly linked. Maybe try tweaking ns-pop-up-frames var.

[agzam]

@dangom, I'm going to close this for now.