Comment 1 for bug 1785716

Some degub:

gdb pcbnew
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
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Reading symbols from pcbnew...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/pcbnew
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffeb5ac700 (LWP 28584)]
[New Thread 0x7fffeadab700 (LWP 28585)]
[New Thread 0x7fffea5aa700 (LWP 28586)]
[New Thread 0x7fffd153a700 (LWP 28603)]
[New Thread 0x7fffc9e64700 (LWP 28604)]
[New Thread 0x7fffc9663700 (LWP 28605)]
[New Thread 0x7fffc8e62700 (LWP 28606)]
[New Thread 0x7fffc7d81700 (LWP 28607)]
[New Thread 0x7fffc7580700 (LWP 28608)]
[Thread 0x7fffc7d81700 (LWP 28607) exited]

Thread 1 "pcbnew" received signal SIGSEGV, Segmentation fault.
0x00007fffdb53a2e4 in ?? () from /usr/bin/_pcbnew.kiface