diff --git a/CHANGELOG.md b/CHANGELOG.md
index 337f7dc..61bac5f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+<!-- markdownlint-disable no-duplicate-heading -->
+
 ## Unreleased
 
 ### Breaking Changes
@@ -66,6 +68,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `Progress` now utilizes `IntoSource<Progress>` instead of
   `IntoDynamic<Progress>`. In general, this should not cause any code breakages
   unless the traits were being used in generics.
+- `Space` now honors `ConstraintLimit::Fill` in its layout.
 
 ### Changed
 
diff --git a/src/widgets.rs b/src/widgets.rs
index 6e86508..9ea27e4 100644
--- a/src/widgets.rs
+++ b/src/widgets.rs
@@ -42,6 +42,8 @@ pub use custom::Custom;
 pub use data::Data;
 pub use disclose::Disclose;
 pub use expand::Expand;
+pub use grid::Grid;
+pub use image::Image;
 pub use input::Input;
 pub use label::Label;
 pub use layers::Layers;
@@ -60,5 +62,3 @@ pub use themed::Themed;
 pub use tilemap::TileMap;
 pub use validated::Validated;
 pub use wrap::Wrap;
-
-pub use self::image::Image;
diff --git a/src/widgets/space.rs b/src/widgets/space.rs
index 86dfa77..64c8977 100644
--- a/src/widgets/space.rs
+++ b/src/widgets/space.rs
@@ -71,10 +71,10 @@ impl Widget for Space {
 
     fn layout(
         &mut self,
-        _available_space: Size<ConstraintLimit>,
+        available_space: Size<ConstraintLimit>,
         _context: &mut LayoutContext<'_, '_, '_, '_>,
     ) -> Size<UPx> {
-        Size::default()
+        available_space.map(ConstraintLimit::min)
     }
 }
 
diff --git a/src/window.rs b/src/window.rs
index f47d4cb..7865e9c 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -3177,6 +3177,7 @@ where
     /// # Panics
     ///
     /// This function panics if the color is not the expected color.
+    #[track_caller]
     pub fn assert_pixel_color<Unit>(&self, location: Point<Unit>, expected: Color, component: &str)
     where
         Unit: Into<UPx>,