Intense Visions

If you break up the text, it will behave more like what you are trying to accomplish. Example:

[intense_button align="center"]
This is a block button. 
Lorem ipsum dolor sit amet, consectetur adipiscing elit. 
Nulla dignissim mi in orci venenatis condimentum. 
Duis scelerisque nulla ac augue vulputate, in luctus ligula convallis. Mauris facilisis felis eu nunc.

If you want the button to handle this more automatically, you can add your own CSS class to the button and set the white-space style to initial. Example CSS:

.my-button-class {
white-space: initial !important;

[intense_button class="my-button-class"]