Tor browser core dump on Arch Linux

Full core dump file captured (*.lz4) is available as 60MB file on request.

$ coredumpctl info 2186 PID: 2186 (firefox) UID: 1000 (jb) GID: 1000 (jb) Signal: 11 (SEGV) Timestamp: Thu 2017-05-04 01:04:48 CEST (16h ago) Command Line: ./firefox --class Tor Browser -profile TorBrowser/Data/Browser/profile.default Executable: /home/jb/Downloads/tor-browser_en-US/Browser/firefox Control Group: / Slice: -.slice Boot ID: edc04a8c98944494b203b06fb397dde0 PID: 2186 (firefox) UID: 1000 (jb) GID: 1000 (jb) Signal: 11 (SEGV) Timestamp: Thu 2017-05-04 01:04:48 CEST (16h ago) Command Line: ./firefox --class Tor Browser -profile TorBrowser/Data/Browser/profile.default Executable: /home/jb/Downloads/tor-browser_en-US/Browser/firefox Control Group: / Slice: -.slice Boot ID: edc04a8c98944494b203b06fb397dde0 Machine ID: e464cf23e765494294ab3515a8e2efd0 Hostname: myhost Storage: /var/lib/systemd/coredump/core.firefox.1000.edc04a8c98944494b203b06fb397dde0.2186.1493852688000000000000.lz4 Message: Process 2186 (firefox) of user 1000 dumped core.

            Stack trace of thread 5626:
            #0  0x00007f8418598ea0 raise (libpthread.so.0)
            #1  0x00007f84141a319c n/a (libxul.so)
            #2  0x00007f8414c78c36 n/a (libxul.so)
            #3  0x00007f8418598fe0 __restore_rt (libpthread.so.0)
            #4  0x00007f841419f0b7 n/a (libxul.so)
            #5  0x00007f8418989568 n/a (/home/jb/Downloads/tor-browser_en-US/Browser/libnspr4.so)
            #6  0x00007f841858e2e7 start_thread (libpthread.so.0)
            #7  0x00007f841760a54f __clone (libc.so.6)
            
            Stack trace of thread 2198:
            #0  0x00007f8418594756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
            #1  0x00007f8418983fc0 PR_WaitCondVar (/home/jb/Downloads/tor-browser_en-US/Browser/libnspr4.so)
            #2  0x00007f8414a55fbd n/a (libxul.so)
            #3  0x00007f8418989568 n/a (/home/jb/Downloads/tor-browser_en-US/Browser/libnspr4.so)
            #4  0x00007f841858e2e7 start_thread (libpthread.so.0)
            #5  0x00007f841760a54f __clone (libc.so.6)
            
            Stack trace of thread 2186:
            #0  0x00007f8418594756 pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0)
            #1  0x00007f8418983fc0 PR_WaitCondVar (/home/jb/Downloads/tor-browser_en-US/Browser/libnspr4.so)
            #2  0x00007f8412b76285 n/a (libxul.so)
            #3  0x00007f8412b77a50 n/a (libxul.so)
            #4  0x00007f8412b7a16d n/a (libxul.so)
            #5  0x00007f8412b960aa n/a (libxul.so)
            #6  0x00007f8412b7b77e n/a (libxul.so)
            #7  0x00007f8412cf47e4 n/a (libxul.so)
            #8  0x00007f8412cf4827 n/a (libxul.so)
            #9  0x00007f8412b5be0d n/a (libxul.so)
            #10 0x00007f8412b5beb6 n/a (libxul.so)
            #11 0x00007f8412b9099b n/a (libxul.so)
            #12 0x00007f84141a5ed1 n/a (libxul.so)
            #13 0x00007f84141a5ef6 n/a (libxul.so)
            #14 0x00007f84141aa723 n/a (libxul.so)
            #15 0x00007f84141aa8e3 XRE_main (libxul.so)
            #16 0x0000563c4b93659b _start (firefox)
            #17 0x0000563c4b935dff n/a (firefox)
            #18 0x00007f841753e511 __libc_start_main (libc.so.6)
            #19 0x0000563c4b935f11 _start (firefox)

Trac:
Username: jb.1234abcd