I only assumed that you suppress the opening of new tabs.
Because if you do not, why did you not see the page opening, that contains the actual download links? Because that is what is happening here!
If you click on the download button. It opens an external page where there is description of like 6 mods the developer made, along with their respective links and alternative links to download them.
Maybe you have some security software on your system that suppresses opening of tabs in a certain way, regardless of your browser.
Oh, and no, a download starting is not what must happen, when you click on an external download link. It might. But most of the time it opens the page of a file hoster that needs further interaction.
