diff --git a/.changeset/eighty-steaks-camp.md b/.changeset/eighty-steaks-camp.md
new file mode 100644
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--- /dev/null
+++ b/.changeset/eighty-steaks-camp.md
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+---
+'@primer/behaviors': minor
+---
+
+Adjusts mutation observer to now track `hidden` and `disabled` attributes being applied or removed.