Ever since my #upgrade to #Debian 10 / #buster, I've had problems with #Epiphany crashing and my home filesystem getting intermittently (and seemingly randomly) low on space. I think I just solved both problems by disabling the #Google Safe Browsing feature, "Try to block dangerous websites":
https://gitlab.gnome.org/GNOME/epiphany/issues/477
https://gabrielivascu.wordpress.com/2017/10/08/safe-browsing-in-epiphany/