Amitai. I just experienced the same problem with an email from a different sender so it is not limited to SA emails. Sorry to have troubled you. Lewis

Amitai. Attached is Screen Shot 2020-02-10 at 7.55.44 AM.png . I added the vertical scroll bar from Mac preferences and that works. I am unable to scroll up and down using two fingers on my MacBook Pro trackpad as I am able to do with all other emails. No big deal but am curious as to why this is happening. Scrolling works fine for your emails on iPhone, iPad and in Gmail in browser on Mac. Thank you. Lewis