diff --git a/src/widgets/align.rs b/src/widgets/align.rs
index eb5da22..403f883 100644
--- a/src/widgets/align.rs
+++ b/src/widgets/align.rs
@@ -150,6 +150,7 @@ impl FrameInfo {
     fn measure(&self, available: ConstraintLimit, content: UPx) -> (UPx, UPx, UPx) {
         match available {
             ConstraintLimit::Fill(size) => {
+                let size = size.max(content);
                 let remaining = size.saturating_sub(content);
                 let (a, b) = match (self.a, self.b) {
                     (Some(a), Some(b)) => (a, b),
diff --git a/src/window.rs b/src/window.rs
index 0892a72..42c2809 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -664,7 +664,7 @@ where
                 window_size.map(ConstraintLimit::SizeToFit)
             });
         let actual_size = if root_mode == RootMode::Align {
-            window_size
+            window_size.max(layout_size)
         } else {
             layout_size
         };
@@ -680,6 +680,10 @@ where
             let _ = layout_context
                 .winit()
                 .request_inner_size(PhysicalSize::from(new_size));
+        } else if render_size != actual_size && resizable {
+            let _ = layout_context
+                .winit()
+                .request_inner_size(PhysicalSize::from(actual_size));
         }
         self.root.set_layout(Rect::from(render_size.into_signed()));