Nullptr access in project explorer

When debugging qt-creator from the command line using lldb I get a nullptr access as soon as I open a recent project (even when waiting for a long time after creator is initialized).
The call to KitManager::registerKit from src/plugins/projectexplorer/project.cpp returns a nullptr because of a firing QTC_ASSERT in kitmanager.cpp:599 (isLoaded())

It seems that this is caused by a race condition due to a deferred call of ProjectExplorerPlugin::restoreKits in projectexplorer.cpp:2044 - at least, moving the function call out of the QTimer::singleShot allows me to debug again.