Comment 1 for bug 1527212

I am having a similar problem. Debian 8.3 x64 Jessie, and also SteamOS (4.1.0-0.steamos.25-amd64)

==
desktop@steamos:~$ midori -g

Launching command: '/usr/bin/gdb' --batch -ex 'set print thread-events off' -ex run -ex 'set logging on /run/user/1000/midori/gdb.bt' -ex 'bt' --return-child-result --args midori
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff22bbe20 in JSC::JSCell::getPrimitiveNumber(JSC::ExecState*, double&, JSC::JSValue&) const () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
#0 0x00007ffff22bbe20 in JSC::JSCell::getPrimitiveNumber(JSC::ExecState*, double&, JSC::JSValue&) const () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
#1 0x00007ffff2184612 in ?? () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
#2 0x00007fff9e460f89 in ?? ()
#3 0x0000000000000000 in ?? ()
==

Seems to be a problem with
/usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-1.0.so.0
-and -
/usr/lib/i386-linux-gnu/libjavascriptcoregtk-3.0.so.0