Fix sometimes not being able to click inside a combo box or popup menu

CHANGELOG.md

@@ -15,6 +15,7 @@ NOTE: [`eframe`](eframe/CHANGELOG.md), [`egui_web`](egui_web/CHANGELOG.md) and [
 * Make minimum grid column width propagate properly.
 * Make sure `TextEdit` contents expand to fill width if applicable.
 * `ProgressBar`: add a minimum width and fix for having it in an infinite layout.
+* Fix sometimes not being able to click inside a combo box or popup menu.
 
 
 ## 0.14.0 - 2021-08-24 - Ui panels and bug fixes

egui/src/containers/area.rs

@@ -168,7 +168,7 @@ impl Area {
 pub(crate) struct Prepared {
     layer_id: LayerId,
     state: State,
-    movable: bool,
+    pub(crate) movable: bool,
     enabled: bool,
     drag_bounds: Option<Rect>,
 }
@@ -337,10 +337,13 @@ impl Prepared {
             state.pos += ctx.input().pointer.delta();
         }
 
-        if let Some(bounds) = drag_bounds {
-            state.pos = ctx.constrain_window_rect_to_area(state.rect(), bounds).min;
-        } else {
-            state.pos = ctx.constrain_window_rect(state.rect()).min;
+        // Important check - don't try to move e.g. a combobox popup!
+        if movable {
+            if let Some(bounds) = drag_bounds {
+                state.pos = ctx.constrain_window_rect_to_area(state.rect(), bounds).min;
+            } else {
+                state.pos = ctx.constrain_window_rect(state.rect()).min;
+            }
         }
 
         if (move_response.dragged() || move_response.clicked())

egui/src/containers/window.rs

@@ -404,6 +404,8 @@ impl<'open> Window<'open> {
             }
             content_inner
         };
+
+        area.movable = possible.movable; // Tell it the truth
         let full_response = area.end(ctx, area_content_ui);
 
         let inner_response = InnerResponse {