This when touch is in use:

Type few characters into lineEdit, then delete them.
==> Drive list opens.
Select any drive from the list and tap into lineEdit to further edit the selection.
==> FEP opens.
Delete the whole content > FEP is automatically closed and drive list is again shown.
==> lineEdit still has the focus.
==> It becomes impossible to select anything from current folder or use the tool buttons above item view
==> User MUST either type in the whole path and open that, OR select one of the drive letters and navigate from there.