“Retroactively sandboxing code which was never designed with compartmentalization in mind is rarely simple to do effectively. In this case the exploit targeted a very basic buffer overflow vulnerability in unused IPC support code for a disabled feature - effectively new attack surface which exists only because of the introduced sandbox.”
If large websites respected our choices regarding ads (DNT is a decade old, people!) and served contextual ads when asked to not track, we would not need to use #AdBlockers.
Instead, for over a decade now web publishing industry's been hell bent on screwing readers over, ignoring clearly stated preferences, misrepresenting what they do with the data, and using dark patterns to maliciously mis-implement legal requirements when forced to do so.