Epiphany 3.8.10 has way too many bugs to be usable. 3.8.5 has it's share of issues as well, but is more usable overall. Anyone know how to revert back to 3.8.5? I've tried with Synaptic but it's not available in the list.
apt-get install «pkg»=«version».
That should downgrade your application.
You'll also need to hold the package from updates with
sudo apt-mark hold package_name