When no pane alias is specified by the user there is no mechanism for containers::pane::pane() to know the alias that is automatically generated in containers::pane::impl::addpane() and so subsequent calls to containers::pane::get() fail as the alias field of containers::pane::impl remains empty.
When no pane alias is specified by the user there is no mechanism for containers::pane::pane() to know the alias that is automatically generated in containers::pane::impl::addpane() and so subsequent calls to containers::pane::get() fail as the alias field of containers::pane::impl remains empty.