Bug in the way the plugin works !!!!???

Hello,
I use this plugin and other plugin which send notifications to subscribers each time a new post is published.

I contacted to support of that plugin because I saw notifications are sent when a post is scheduled.

So the plugin support says:

“We investigated the issue and we’ve determined this isn’t a bug in our plugin, but appears to be an issue with how Publish to Schedule works.

When using Publish to Schedule and drafting a new post, you can click the button “Pub. to Schedule”. This should schedule a post without publishing it, but actually what Publish to Schedule does is actually publish the post first, and then revert the post status to ‘future’.

Unfortunately, once a post status is set to published (even if only for a second), our plugin detects this and sends a notification.

In other words, Publish to Schedule publishes the post first, and then schedules it after (to be published again?). Our plugin sends a notification any time a post is published.”

So, can you fix this bug please?