workflow_dispatch yaml config doesnt work as documented

[rukai]

https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows#example
The documentation says I can use it like this but it doesnt work. It seems to fail to parse the yaml giving me an error with the line number of the workflow_dispatch.

on:
  workflow_dispatch

Instead it works when I define an empty yaml map like:

on:
  workflow_dispatch: {}

As a bonus bug, when I define like:

on:
  workflow_dispatch: []

The github UI stops working!
Pressing the "Run workflow" button causes a popup to appear that is stuck infinitely loading.

[Slowlife01]

If it's multiple events you would have to make it like this or yea use {}/null:

on: 
  workflow_dispatch:
  pull_request:

because of course that's just how YAML works

on: 
  workflow_dispatch

on: workflow_dispatch

otherwise those should work just fine...
and you aren't supposed to set it to array anyways

[rukai]

Yes I understand, however:

• The documentation should use this correct syntax
• Using the wrong syntax shouldn't make the UI hang. It should give me an error instead!

[Slowlife01]

• I agree with that
• It did give me an error and never shown the button. If you refresh the site it would be gone I suppose?

[Slowlife01]

Apparently I was wrong on second one, my bad I misremembered. Although it did of course give you an error on github editor, but didn't give you config error on actions tab

[ethomson]

Sorry I didn't see this at the time, but I can confirm that the documentation matches the product behavior now. Thanks for the feedback!