When reloading a QML file that is cached then it is possible that the original mapping to the previous cache file is still held

When reloading a QML file that is cached then it is possible that the original mapping to the previous cache file is still held. This means that it can eventually run out of file handles as a result. This can be seen in the example by clicking on the buttons, one will do an unload/load once whereas toggle will do it over and over. Checking the open handles in the Process Explorer in Windows will show that there are more than one handle for a given cache file then.