QFileDialog::getExistingDirectory() usability issue

On my system in directory listing dialogs one mouse click is needed to enter a directory or select a file.

It's convenient when a file needs to be selected, but with getExistingDirectory() it results in unexpected behaviour – it's not possible to select a directory without entering it, so one needs to do tricks like "ctrl + click the dir name" or select the directory name with a rectangle and then press "Open".

I suggest that QFileDialog::getExistingDirectory() don't respect the setting "one click to open file / enter subdir", but rather use single click to select a directory and double click to enter it.