diff --git a/docs/pages/resources/changelog.md b/docs/pages/resources/changelog.md
index c37c7ad748..ce82d41c07 100644
--- a/docs/pages/resources/changelog.md
+++ b/docs/pages/resources/changelog.md
@@ -18,6 +18,7 @@ New versions of Shoelace are released as-needed and generally occur when a criti
 - Fixed a bug in `<dialog>` where when it showed it would cause a layout shift. [#1967]
 - Fixed a bug in `<sl-tooltip>` that allowed unwanted text properties to leak in [#1947]
 - Fixed a bug in `<sl-button-group>` classes [#1974]
+- Fixed a bug in `<sl-textarea>` that may throw errors on `disconnectedCallback` in test environments [#1985]
 
 ## 2.15.0
 
diff --git a/src/components/textarea/textarea.component.ts b/src/components/textarea/textarea.component.ts
index f4c6e0f43a..d0dd8d5dda 100644
--- a/src/components/textarea/textarea.component.ts
+++ b/src/components/textarea/textarea.component.ts
@@ -163,7 +163,9 @@ export default class SlTextarea extends ShoelaceElement implements ShoelaceFormC
 
   disconnectedCallback() {
     super.disconnectedCallback();
-    this.resizeObserver.unobserve(this.input);
+    if (this.input) {
+      this.resizeObserver.unobserve(this.input);
+    }
   }
 
   private handleBlur() {