various fixes

examples/cosmic/src/window/demo.rs

@@ -3,7 +3,7 @@ use std::{cell::RefCell, rc::Rc};
 use apply::Apply;
 use cosmic::{
     cosmic_theme,
-    iced::widget::{checkbox, column, progress_bar, radio, slider, text, text_input},
+    iced::widget::{checkbox, column, progress_bar, radio, slider, text},
     iced::{Alignment, Length},
     iced_core::id,
     theme::ThemeType,
@@ -488,6 +488,7 @@ impl State {
             .into(),
             cosmic::widget::text_input("", &self.entry_value)
                 .label("Test Input")
+                .helper_text("test helper text")
                 .on_input(Message::InputChanged)
                 .size(20)
                 .id(INPUT_ID.clone())

examples/cosmic/src/window/desktop.rs

@@ -135,6 +135,7 @@ impl State {
                 .spacing(16)
                 .into(),
             ])
+            .width(Length::Fill)
             .into(),
             Some(DesktopPage::DesktopOptions) => self.view_desktop_options(window),
             Some(DesktopPage::Wallpaper) => self.view_desktop_wallpaper(window),