"CoInitialize has not been called" spam in debugger

I get huge amounts of spam in the debugger when running Qt Quick applications like the following:

onecore\com\combase\objact\objact.cxx(834)\combase.dll!00007FFD13278CC7: (caller: 00007FFD13278046) ReturnHr(231) tid(2018) 800401F0 CoInitialize has not been called.

It's caused by the call to SHParseDisplayName in shellNormalizeFileName in qqmlengine.cpp, which is called in the QQmlThread. I think you need to call CoInitialize to use that API properly?