Cannot switch to another user with sign_in method

[jbwl]

Environment

• Ruby 3.3.6
• Rails 7.2.2.1 (API-only)
• Devise 4.9.4

Current behavior

puts current_user.id
1
@mike = User.find(2)
sign_in(@mike, store: false)
# also tried:
sign_in(@mike, event: :authorization, store: false)
# result: current_user stays the same
puts current_user.id
1

Will be even more helpful if you provide a sample application or a test case that reproduces the error.

Expected behavior

puts current_user.id
2

Also the current_sign_in and last_sign_in timestamps are not changed, so it seems like there is no sign in actually happening with sign_in

Maybe I am not understanding how this is supposed to work? I am trying to sign in a different user when there already is a current_user, e.g. switching the user for impersonating in the frontend app ("An admin user can impersonate a standard user"). The frontend app handles the logic, I just a way to sign_in a different user on an authenticated route, because that route must only be accessible for admins.
The downstream issue for me is that devise-jwt will not dispatch an Authorization header because Devise isn't signing in the user.