Multiple (100's) of memory leaks reported by Heob in QtCored5.DLL from ANY application

I am trying to detect and fix memory leaks in my application using Heob, however the task is made impossible because Heob reports 100's of leak blocks from QtCored5.DLL, all of which are from

public: class QPoint const & QVector<class QPoint>::front(void)const

Attached is the leaks.xml from compiling and analysing the standard AnalogClock example project - 160 leaks from a tiny project - I'm seeing 550+ in my project just from opening and closing it, and 99% of those are as above, making spotting my 1% errors impossible.

The same problem existed in 5.11.3, but was reported as a different function.