It's an artifact introduced by commit b3c73b7868.
b3c73b7868
@ -128,7 +128,6 @@ Application::Application(const QString &id, int &argc, char **argv)
if (m_commandLineArgs.webUiPort > 0) // it will be -1 when user did not set any value
Preferences::instance()->setWebUiPort(m_commandLineArgs.webUiPort);
setApplicationName("qBittorrent");
initializeTranslation();
#if !defined(DISABLE_GUI)