Here's the situation on i686. Be sure to test on i686, not amd64, where it works fine.
libwebkit2gtk-4.0-37: Installed: 2.23.91-1 epiphany-browser: Installed: 3.31.91-2 $ mkdir /tmp/p; HOME=/tmp/p epiphany-browser You'll see it just shows it is loading about:overview, and it just loops over and over with: ** (epiphany:3475): WARNING **: 05:59:49.922: Web process crashed (WebKitWebProcess:3679): GLib-GObject-WARNING **: 05:59:50.666: ../../../gobject/gtype.c:4265: type id '0' is invalid (WebKitWebProcess:3679): GLib-GObject-WARNING **: 05:59:50.682: can't peek value table for type '<invalid>' which is not currently referenced /usr/lib/i386-linux-gnu/webkit2gtk-4.0/MiniBrowser works fine though. It can even browse web pages and files. strace shows the loop is at futex(0x14656c0, FUTEX_WAKE_PRIVATE, 1) = 1 clock_gettime(CLOCK_MONOTONIC, {tv_sec=5717, tv_nsec=613493764}) = 0 futex(0x143c9ec, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, {tv_sec=1551478070, tv_nsec=762190103}... Anyway please fix "gtype.c:4265: type id '0' is invalid". Thank you.