Plug appears to be destroyed when navigating away

[cassidyjames]

What Happened

When you hit "All Settings" to leave the About plug, the plug contents themselves seem to disappear. This is made more obvious since elementary/switchboard#181, where it also breaks the animation.

Expected Behavior

Navigating away from the About plug is smooth and matches the other plugs.

Steps to Reproduce

1. Open the About plug
2. Hit "All Settings" to leave it

Logs

Platform Information

elementary OS 6 daily, running Switchboard master from Git.

[cassidyjames]

This looks suspect, maybe?

switchboard-plug-about/src/Plug.vala

Lines 50 to 52 in 8141faa

	public override void hidden () {
	main_grid.hide ();
	}

[pongloongyeat]

switchboard-plug-about/src/Plug.vala

Lines 50 to 52 in 8141faa

	public override void hidden () {
	main_grid.hide ();
	}

That does seem to be the issue. Should I open a PR for it?