diff --git a/CHANGELOG.md b/CHANGELOG.md
index be641726..0093f20a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ NOTE: [`epaint`](epaint/CHANGELOG.md), [`eframe`](eframe/CHANGELOG.md), [`egui_w
 
 ### Fixed 🐛
 * Context menu now respects the theme ([#1043](https://github.com/emilk/egui/pull/1043))
+* Immovable windows can no longer incorrectly move ([#1049](https://github.com/emilk/egui/pull/1049))
 
 ## 0.16.1 - 2021-12-31 - Add back `CtxRef::begin_frame,end_frame`
 
diff --git a/egui/src/containers/window.rs b/egui/src/containers/window.rs
index 4eceac70..3c80a5d0 100644
--- a/egui/src/containers/window.rs
+++ b/egui/src/containers/window.rs
@@ -399,9 +399,11 @@ impl<'open> Window<'open> {
             content_inner
         };
 
-        area.state_mut().pos = ctx
-            .constrain_window_rect_to_area(area.state().rect(), area.drag_bounds())
-            .min;
+        if area.movable {
+            area.state_mut().pos = ctx
+                .constrain_window_rect_to_area(area.state().rect(), area.drag_bounds())
+                .min;
+        }
 
         let full_response = area.end(ctx, area_content_ui);
 
@@ -508,7 +510,11 @@ fn interact(
     let new_rect = move_and_resize_window(ctx, &window_interaction)?;
     let new_rect = ctx.round_rect_to_pixels(new_rect);
 
-    let new_rect = ctx.constrain_window_rect_to_area(new_rect, area.drag_bounds());
+    let new_rect = if area.movable {
+        ctx.constrain_window_rect_to_area(new_rect, area.drag_bounds())
+    } else {
+        new_rect
+    };
 
     // TODO: add this to a Window state instead as a command "move here next frame"
     area.state_mut().pos = new_rect.min;