Crash in qt3d/src/render/jobs/renderviewjobutils.cpp (207)

Hi,

I'm working on porting my application from Qt5 to Qt6. I'm getting a crash in qt3d/src/render/jobs/renderviewjobutils.cpp line 207 because node==nullptr in the statement

if (node->isEnabled() && stateSet->canAddStateOfType(node->type())) {

The crash goes away if I add a guard for this

if (node && node->isEnabled() && stateSet->canAddStateOfType(node->type())) {

But I guess this crash is a symptom of another bug somewhere that causes node to be nullptr in the first place. I'm not quite sure how to debug that. From the context I assume it is related to a renderstate, but I have not yet been able to create a simple example that isolates the bug. 

Note that the code works fine in Qt5, including the latest 5.15.