qBittorrent crashed when trying to add tracker to magnet torrent

Catching SIGABRT, please report a bug at http://bug.qbittorrent.org
and provide the following backtrace:
qBittorrent version: v3.0.0rc5
stack trace:
  /lib/x86_64-linux-gnu/libc.so.6 : ()+0x324f0 [0x7f094f2434f0]
  /lib/x86_64-linux-gnu/libc.so.6 : gsignal()+0x35 [0x7f094f243475]
  /lib/x86_64-linux-gnu/libc.so.6 : abort()+0x180 [0x7f094f2466f0]
  /usr/lib/x86_64-linux-gnu/libstdc++.so.6 : __gnu_cxx::__verbose_terminate_handler()+0x11d [0x7f094fa9668d]
  /usr/lib/x86_64-linux-gnu/libstdc++.so.6 : ()+0x63796 [0x7f094fa94796]
  /usr/lib/x86_64-linux-gnu/libstdc++.so.6 : ()+0x637c3 [0x7f094fa947c3]
  /usr/lib/x86_64-linux-gnu/libstdc++.so.6 : __cxa_rethrow()+0x46 [0x7f094fa94a36]
  /usr/lib/x86_64-linux-gnu/libQtCore.so.4 : QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)+0x38c [0x7f094feb847c]
  /usr/lib/x86_64-linux-gnu/libQtCore.so.4 : QCoreApplication::exec()+0x87 [0x7f094febd277]
  src/qbittorrent : main()+0xc64 [0x481724]
  /lib/x86_64-linux-gnu/libc.so.6 : __libc_start_main()+0xfd [0x7f094f22fead]
  src/qbittorrent() [0x489f91]
Aborted

I have had this happen so far on one torrent.
I go to add a tracker (it is a magnet torrent), and then I enter in the details. When I click to add it, it crashes.