diff --git a/js/scenes/SurfaceScene.js b/js/scenes/SurfaceScene.js
index 9a56405..42fbe14 100644
--- a/js/scenes/SurfaceScene.js
+++ b/js/scenes/SurfaceScene.js
@@ -446,6 +446,7 @@ export class SurfaceScene extends Phaser.Scene {
     if (!this.hudLines) return;
     if (this.hudT0 === null) {
       this.hudT0 = time;
+      this.playSfx('construct'); // the planet info starts typing in (data/sfx.json → construct)
       for (const ln of this.hudLines) ln.dec = new ScrambleDecode(ln.value, time + ln.delay, ln.dur);
     }
     let done = true;
diff --git a/js/ui/BuildWindow.js b/js/ui/BuildWindow.js
index 78a324c..472e4f3 100644
--- a/js/ui/BuildWindow.js
+++ b/js/ui/BuildWindow.js
@@ -1233,7 +1233,12 @@ export class BuildWindow extends Phaser.GameObjects.Container {
     this._paintAll(this.activeCat);
     this._paintStatusStrip();
 
-    this.video?.play?.();
+    // resume() not play(): v4's play() is a no-op after pause() (its
+    // _playCalled flag stays true, so the native play() is never
+    // re-issued) — the feed would stay frozen after close → reopen.
+    // resume() handles both a first open (delegates to play()) and a
+    // re-open of a paused clip.
+    this.video?.resume?.();
     this.sfx('ui_window');
     this._startReveal();
 
diff --git a/js/ui/MapWindow.js b/js/ui/MapWindow.js
index 24f0a38..7faa65f 100644
--- a/js/ui/MapWindow.js
+++ b/js/ui/MapWindow.js
@@ -2171,7 +2171,12 @@ export class MapWindow extends Phaser.GameObjects.Container {
     if (this.openState === 'open' || this.openState === 'opening') return;
     this.openState = 'opening';
     this.setAlpha(0);
-    this.video?.play?.();
+    // resume() not play(): v4's play() is a no-op after pause() (its
+    // _playCalled flag stays true, so the native play() is never
+    // re-issued) — the feed would stay frozen after close → reopen.
+    // resume() handles both a first open (delegates to play()) and a
+    // re-open of a paused clip.
+    this.video?.resume?.();
     this.sfx('ui_window');
     const now = this.scene.time.now;
     this._startReveal(now);
diff --git a/js/ui/QuestWindow.js b/js/ui/QuestWindow.js
index 22085af..d23431e 100644
--- a/js/ui/QuestWindow.js
+++ b/js/ui/QuestWindow.js
@@ -1065,7 +1065,12 @@ export class QuestWindow extends Phaser.GameObjects.Container {
     if (this.openState === 'open' || this.openState === 'opening') return;
     this.openState = 'opening';
     this.setAlpha(0);
-    this.video?.play?.();
+    // resume() not play(): v4's play() is a no-op after pause() (its
+    // _playCalled flag stays true, so the native play() is never
+    // re-issued) — the feed would stay frozen after close → reopen.
+    // resume() handles both a first open (delegates to play()) and a
+    // re-open of a paused clip.
+    this.video?.resume?.();
     this.sfx('ui_window');
     this._startReveal(this.scene.time.now);
   }
diff --git a/js/ui/ResearchWindow.js b/js/ui/ResearchWindow.js
index 0cb57c8..b96de82 100644
--- a/js/ui/ResearchWindow.js
+++ b/js/ui/ResearchWindow.js
@@ -1269,7 +1269,12 @@ export class ResearchWindow extends Phaser.GameObjects.Container {
     this._paintAll(this.activeCat);
     this._paintStatusStrip();
 
-    this.video?.play?.();
+    // resume() not play(): v4's play() is a no-op after pause() (its
+    // _playCalled flag stays true, so the native play() is never
+    // re-issued) — the feed would stay frozen after close → reopen.
+    // resume() handles both a first open (delegates to play()) and a
+    // re-open of a paused clip.
+    this.video?.resume?.();
     this.sfx('ui_window');
     this._startReveal();
   }