diff --git a/src/display/touch_manager.js b/src/display/touch_manager.js
index 69f6a9f6d..c570195b5 100644
--- a/src/display/touch_manager.js
+++ b/src/display/touch_manager.js
@@ -13,7 +13,6 @@
  * limitations under the License.
  */
 
-import { shadow } from "../shared/util.js";
 import { stopEvent } from "./display_utils.js";
 
 class TouchManager {
@@ -65,6 +64,10 @@ class TouchManager {
     });
   }
 
+  /**
+   * NOTE: Don't shadow this value since `devicePixelRatio` may change if the
+   * window resolution changes, e.g. if the viewer is moved to another monitor.
+   */
   get MIN_TOUCH_DISTANCE_TO_PINCH() {
     // The 35 is coming from:
     //  https://searchfox.org/mozilla-central/source/gfx/layers/apz/src/GestureEventListener.cpp#36
@@ -72,11 +75,7 @@ class TouchManager {
     // The properties TouchEvent::screenX/Y are in screen CSS pixels:
     //  https://developer.mozilla.org/en-US/docs/Web/API/Touch/screenX#examples
     // MIN_TOUCH_DISTANCE_TO_PINCH is in CSS pixels.
-    return shadow(
-      this,
-      "MIN_TOUCH_DISTANCE_TO_PINCH",
-      35 / (window.devicePixelRatio || 1)
-    );
+    return 35 / (window.devicePixelRatio || 1);
   }
 
   #onTouchStart(evt) {