Chromium Secure and Adobe reader

As Dragon is quite outdated, I’ve installed Chromium Secure. Frankly the 2 look very similar.

But in Dragon, when you click on a PDF file you are asked if you want to download it.

Instead in Chromium Secure, the PDF file is supposed to open in a separate tab. Here my problem. The file doesn’t open and I’ve a message saying “initializing”…and it keeps initializing. Hence my question : is it a bug or is there a step that I missed to open the file?

And another question, if I want to download the file instead of opening it in the browser how can I do it?

Thank you.