We don't want the password entry to grow when entering more characters
that fit the available width; as labels' ClutterText ellipsizes by
default, the password label allows the entry to grow by shrinking.
Setting the appropriate ellipsize mode fixes this.
https://bugzilla.gnome.org/show_bug.cgi?id=708324
if (this.prompt.password_visible) {
let label = new St.Label({ style_class: 'prompt-dialog-password-label' });
label.set_text(_("Password:"));
+ label.clutter_text.ellipsize = Pango.EllipsizeMode.NONE;
layout.pack(label, 0, row);
layout.child_set(label, { x_expand: false, y_fill: false,
x_align: Clutter.TableAlignment.START });