[MS-WOPI] Downloading PowerPoint files doesn't work from the WOPI client (view/edit)

Question

Hey there,

When I try to download a file (e.g. pptx file) from the client it doesn't do so, the option is clickable, the overlay appears, but when I hit the download button nothing happens.

But, when I try to download the file as an ODP then I click on the link "click here to download" it opens in a new tab, when I click on the address bar, hit enter the ODP file gets downloaded. It should be downloaded automatically though.