diff --git a/src/client/os.ts b/src/client/os.ts
index fe4054e272..a971eebd45 100644
--- a/src/client/os.ts
+++ b/src/client/os.ts
@@ -323,16 +323,13 @@ export async function openEmojiPicker(src?: HTMLElement, opts, initialTextarea:
 
 	const observer = new MutationObserver(records => {
 		for (const record of records) {
-			for (const node of Array.from(record.addedNodes)) {
-				if (node instanceof HTMLElement) {
-					const textareas = node.querySelectorAll('textarea, input');
-					for (const textarea of Array.from(textareas)) {
-						if (textarea.dataset.preventEmojiInsert != null) return;
-						if (document.activeElement === textarea) activeTextarea = textarea;
-						textarea.addEventListener('focus', () => {
-							activeTextarea = textarea;
-						});
-					}
+			for (const node of Array.from(record.addedNodes).filter(node => node instanceof HTMLElement) as HTMLElement[]) {
+				const textareas = node.querySelectorAll('textarea, input') as NodeListOf<NonNullable<typeof activeTextarea>>;
+				for (const textarea of Array.from(textareas).filter(textarea => textarea.dataset.preventEmojiInsert == null)) {
+					if (document.activeElement === textarea) activeTextarea = textarea;
+					textarea.addEventListener('focus', () => {
+						activeTextarea = textarea;
+					});
 				}
 			}
 		}