No, go into your Qt Creator preferences and "Build & Run", then Qt Versions. Select the Qt version you're using and then expand the section for "Helpers" and make sure you build the debugging extensions.
I haven't used windows in several years, so may have to dig a little to find that option and I'm not 100% sure that it's applicable for MSVC, but basically it sounds like your debugger doesn't understand the Qt types, etc.
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