Auto-complete of switch does not work if used on templated methods return

Trying to generate the individual cases for the switch in the following snippet does not work. It does however work when storing the returned value in a variable of type Tags or apparently when using a method which returns the type directly.

#include <QTaggedPointer>
enum Tags {A, B};
 
int main() {
  QTaggedPointer<void *, Tags> taggy;
   switch(taggy.tag()) { // try to refactor this switch to complete the case statements
  }
}