I have an idea

[eXnaVeL]

I think you should add the ability to hide the playback toolbar. Specifically, you can add 1 toolbar minimize button.Or I think you can add the option to hide the toolbar on the notification bar, and control it in the notification bar. In short, I think we'll need a minimize button.Thank you for reading my request !!
Here is an image for the example I have just given.

[StageGuard]

Hidding all window while playing is dangerous. You know this script works with accessibility and emulate touching screen. If something unexpected happened(e.g. close piano roll or touch a floating notification accidently), you almost cannot deal with it because script is stilling touching screen. So I didn't add button to hide playing panel.
But anyway, if more people need this feature, I will consider adding it.

[eXnaVeL]

Hidding all window while playing is dangerous. You know this script works with accessibility and emulate touching screen. If something unexpected happened(e.g. close piano roll or touch a floating notification accidently), you almost cannot deal with it because script is stilling touching screen. So I didn't add button to hide playing panel.
But anyway, if more people need this feature, I will consider adding it.

If you add the toolbar hidden feature to the notification bar, you can set the pause button to buttons like volume up / down, or swiping down the notification bar will pause it. If not, you can make it look like a Messenger chat bubble. Thank you for the reply.

[StageGuard]

@nguyenson071202 I will try it.

[StageGuard]

I have released Version 23 which support it.