diff --git a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
index baee969ac4..d116af2918 100644
--- a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
+++ b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
@@ -49,7 +49,7 @@ type MfmEvents = {
 };
 
 // eslint-disable-next-line import/no-default-export
-export default function(props: MfmProps, context: SetupContext<MfmEvents>) {
+export default function (props: MfmProps, { emit }: { emit: SetupContext<MfmEvents>['emit'] }) {
 	const isNote = props.isNote ?? true;
 	const shouldNyaize = props.nyaize ? props.nyaize === 'respect' ? props.author?.isCat : false : false;
 
@@ -292,7 +292,7 @@ export default function(props: MfmProps, context: SetupContext<MfmEvents>) {
 							ev.stopPropagation();
 							ev.preventDefault();
 							const clickEv = typeof token.props.args.ev === 'string' ? token.props.args.ev : '';
-							context.emit('clickEv', clickEv);
+							emit('clickEv', clickEv);
 						} }, genEl(token.children, scale));
 					}
 				}
diff --git a/packages/frontend/src/components/global/MkStickyContainer.vue b/packages/frontend/src/components/global/MkStickyContainer.vue
index 70cc68b14c..c528b80285 100644
--- a/packages/frontend/src/components/global/MkStickyContainer.vue
+++ b/packages/frontend/src/components/global/MkStickyContainer.vue
@@ -63,27 +63,32 @@ onMounted(() => {
 	watch([parentStickyTop, parentStickyBottom], calc);
 
 	watch(childStickyTop, () => {
+		if (bodyEl.value == null) return;
 		bodyEl.value.style.setProperty('--stickyTop', `${childStickyTop.value}px`);
 	}, {
 		immediate: true,
 	});
 
 	watch(childStickyBottom, () => {
+		if (bodyEl.value == null) return;
 		bodyEl.value.style.setProperty('--stickyBottom', `${childStickyBottom.value}px`);
 	}, {
 		immediate: true,
 	});
 
-	headerEl.value.style.position = 'sticky';
-	headerEl.value.style.top = 'var(--stickyTop, 0)';
-	headerEl.value.style.zIndex = '1000';
+	if (headerEl.value != null) {
+		headerEl.value.style.position = 'sticky';
+		headerEl.value.style.top = 'var(--stickyTop, 0)';
+		headerEl.value.style.zIndex = '1000';
+		observer.observe(headerEl.value);
+	}
 
-	footerEl.value.style.position = 'sticky';
-	footerEl.value.style.bottom = 'var(--stickyBottom, 0)';
-	footerEl.value.style.zIndex = '1000';
-
-	observer.observe(headerEl.value);
-	observer.observe(footerEl.value);
+	if (footerEl.value != null) {
+		footerEl.value.style.position = 'sticky';
+		footerEl.value.style.bottom = 'var(--stickyBottom, 0)';
+		footerEl.value.style.zIndex = '1000';
+		observer.observe(footerEl.value);
+	}
 });
 
 onUnmounted(() => {