signOut callback not getting triggered when using github App with next.js

[Notenlish]

Provider type

GitHub

Environment

System:
    OS: Windows 11 10.0.22631
    CPU: (16) x64 12th Gen Intel(R) Core(TM) i5-12500H
    Memory: 3.06 GB / 15.75 GB
  Binaries:
    Node: 20.11.1 - C:\Program Files\nodejs\node.EXE
    npm: 10.2.4 - C:\Program Files\nodejs\npm.CMD
    bun: 1.1.3 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (127.0.2651.74)
    Internet Explorer: 11.0.22621.3527
  npmPackages:
    next: 14.1.3 => 14.1.3
    next-auth: ^5.0.0-beta.20 => 5.0.0-beta.20
    react: ^18 => 18.2.0

Reproduction URL

https://github.com/Notenlish/signout-bug-nextauth

Describe the issue

signOut callback should be triggered according to the documentation but it doesnt. In fact, my lsp tells me that signOut does not exist in callbacks. Idk what I'm doing wrong.

https://next-auth.js.org/configuration/events#signout

I can verify that signIn callback works, but signOut doesnt.

is there any workaround I could use? Why is signOut not recognized?

How to reproduce

Just clone the project, sign in with a test github App(you can create one yourself or use the one I created)

Expected behavior

it should print "Sign out happened!" when I sign out.

[Notenlish]

Well, is signout callback going to get added?