Is the fact that correct that Wordpress_Query automatically returns 10 posts? I've a lot more than 10 posts and did not set the publish_count variable also it came back 10 posts. I Quickly set publish_count to 1000 also it came back all posts (Now I've 27 posts for test reasons). I Quickly read some documentation and learned after that will be able to set publish_count=-1 to come back all posts. I attempted also it labored. However I could not locate an explanation whether it's fine it returns 10 posts automatically. Thanks.

Yes, the default is 10 posts. You need to take a look in the documentation for that Loop. That may help you obtain a better knowledge of the salt water evaporates.