I am seeing this problem as well. I don't see the freeze on Firefox, however, even without ad blocker there. 

Safari 14.0.3 consistently freezes the browser window as you scroll down through an article at the point where you reach the "today's financial videos" in the right hand column. Does not occur in other browsers, eg Firefox. Extremely annoying. 

Confirming same problem since this morning, and not fixed by whatever you did earlier. Safari 13.0.3 on Mojave 10.14.6

We are now up to 3.8.7 on the iphone, still does not display portfolio prices, stock prices, or news at all. The whole series from 3.8.1 has been unuseable on IOS for two weeks now. Very poor showing. Please either fix or revert back to earlier version of app that worked. Having to move to alternative price & news tracking apps. 

3.8.1 crashed immediately on launch. 3.8.2 which just came out does not crash, but does not display any news, quotes or look up stock prices. IOS app worked fine prior to 3.8.1