Gtk.Entry placeholder text doesn't clear on focus
In Gtk3 when a Gtk.Entry widget got focus (for example was clicked on) any placeholder text set would clear and the cursor would appear.
In Gtk4 the placeholder text does not clear on focus, it only clears when text is actually entered. This makes it less obvious to the user that the placeholder text actually is just a placeholder and the field is editable. If this behaviour change is intentional, could it be made configurable so that it can still be used in the original way?