Same here, only Opera, only Microsoft Update Catalog, only .msu files.
I understand the problem is with their site which was previously only downloadable with IE and ActiveX and they recently update it because IE and ActiveX are no more.
Do hope Opera can do a workaround.
@oonamistwalker Well, you will need to find out what extensions you were using. In the place you circled in the screen shot, there should be nothing. However there are extensions that add a button there to allow you to download the videos.
You can check the source of information (Overview in this case) by clicking on i button. I would really appreciate if you could specifically point out the changes required so as to better reflect Opera. You may also open a PR by editing this file.