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-rw-r--r--modules/libpref/init/all.js4
1 files changed, 2 insertions, 2 deletions
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index a841bde55..43d4b093c 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -212,8 +212,8 @@ pref("dom.enable_performance_observer", false);
pref("dom.requestIdleCallback.enabled", true);
// Enable Intersection Observers
-// See WD https://w3c.github.io/IntersectionObserver/
-pref("dom.IntersectionObserver.enabled", false);
+// See WD https://www.w3.org/TR/intersection-observer/
+pref("dom.IntersectionObserver.enabled", true);
// Whether the Gamepad API is enabled
pref("dom.gamepad.enabled", true);