diff --git a/src/client/components/ui/modal.vue b/src/client/components/ui/modal.vue
index 1c8ae63907..03be437071 100644
--- a/src/client/components/ui/modal.vue
+++ b/src/client/components/ui/modal.vue
@@ -69,71 +69,78 @@ export default defineComponent({
 	mounted() {
 		this.$watch('src', () => {
 			this.fixed = getFixedContainer(this.src) != null;
+			this.$nextTick(() => {
+				this.align();
+			});
 		}, { immediate: true });
 
 		this.$nextTick(() => {
 			const popover = this.$refs.content as any;
-
-			// TODO: ResizeObserver無くしたい
 			new ResizeObserver((entries, observer) => {
-				if (!this.popup) return;
-
-				const rect = this.src.getBoundingClientRect();
-				
-				const width = popover.offsetWidth;
-				const height = popover.offsetHeight;
-
-				let left;
-				let top;
-
-				if (this.srcCenter) {
-					const x = rect.left + (this.fixed ? 0 : window.pageXOffset) + (this.src.offsetWidth / 2);
-					const y = rect.top + (this.fixed ? 0 : window.pageYOffset) + (this.src.offsetHeight / 2);
-					left = (x - (width / 2));
-					top = (y - (height / 2));
-				} else {
-					const x = rect.left + (this.fixed ? 0 : window.pageXOffset) + (this.src.offsetWidth / 2);
-					const y = rect.top + (this.fixed ? 0 : window.pageYOffset) + this.src.offsetHeight;
-					left = (x - (width / 2));
-					top = y;
-				}
-
-				if (this.fixed) {
-					if (left + width > window.innerWidth) {
-						left = window.innerWidth - width;
-					}
-
-					if (top + height > window.innerHeight) {
-						top = window.innerHeight - height;
-					}
-				} else {
-					if (left + width - window.pageXOffset > window.innerWidth) {
-						left = window.innerWidth - width + window.pageXOffset - 1;
-					}
-
-					if (top + height - window.pageYOffset > window.innerHeight) {
-						top = window.innerHeight - height + window.pageYOffset - 1;
-					}
-				}
-
-				if (top < 0) {
-					top = 0;
-				}
-
-				if (left < 0) {
-					left = 0;
-				}
-
-				if (top > rect.top + (this.fixed ? 0 : window.pageYOffset)) {
-					this.transformOrigin = 'center top';
-				}
-
-				popover.style.left = left + 'px';
-				popover.style.top = top + 'px';
+				this.align();
 			}).observe(popover);
 		});
 	},
 	methods: {
+		align() {
+			if (!this.popup) return;
+
+			const popover = this.$refs.content as any;
+
+			const rect = this.src.getBoundingClientRect();
+			
+			const width = popover.offsetWidth;
+			const height = popover.offsetHeight;
+
+			let left;
+			let top;
+
+			if (this.srcCenter) {
+				const x = rect.left + (this.fixed ? 0 : window.pageXOffset) + (this.src.offsetWidth / 2);
+				const y = rect.top + (this.fixed ? 0 : window.pageYOffset) + (this.src.offsetHeight / 2);
+				left = (x - (width / 2));
+				top = (y - (height / 2));
+			} else {
+				const x = rect.left + (this.fixed ? 0 : window.pageXOffset) + (this.src.offsetWidth / 2);
+				const y = rect.top + (this.fixed ? 0 : window.pageYOffset) + this.src.offsetHeight;
+				left = (x - (width / 2));
+				top = y;
+			}
+
+			if (this.fixed) {
+				if (left + width > window.innerWidth) {
+					left = window.innerWidth - width;
+				}
+
+				if (top + height > window.innerHeight) {
+					top = window.innerHeight - height;
+				}
+			} else {
+				if (left + width - window.pageXOffset > window.innerWidth) {
+					left = window.innerWidth - width + window.pageXOffset - 1;
+				}
+
+				if (top + height - window.pageYOffset > window.innerHeight) {
+					top = window.innerHeight - height + window.pageYOffset - 1;
+				}
+			}
+
+			if (top < 0) {
+				top = 0;
+			}
+
+			if (left < 0) {
+				left = 0;
+			}
+
+			if (top > rect.top + (this.fixed ? 0 : window.pageYOffset)) {
+				this.transformOrigin = 'center top';
+			}
+
+			popover.style.left = left + 'px';
+			popover.style.top = top + 'px';
+		},
+
 		childRendered() {
 			// モーダルコンテンツにマウスボタンが押され、コンテンツ外でマウスボタンが離されたときにモーダルバックグラウンドクリックと判定させないためにマウスイベントを監視しフラグ管理する
 			const content = this.$refs.content.children[0];
diff --git a/src/client/os.ts b/src/client/os.ts
index 9fafb6db43..e97c2d7ba0 100644
--- a/src/client/os.ts
+++ b/src/client/os.ts
@@ -360,16 +360,12 @@ export async function openEmojiPicker(src?: HTMLElement, opts, initialTextarea:
 let reactionPicker = null;
 export async function pickReaction(src: HTMLElement, chosen, closed) {
 	if (reactionPicker) {
-		if (reactionPicker.opening) return;
-
-		reactionPicker.opening = true;
 		reactionPicker.src.value = src;
 		reactionPicker.manualShowing.value = true;
 		reactionPicker.chosen = chosen;
 		reactionPicker.closed = closed;
 	} else {
 		reactionPicker = {
-			opening: true,
 			src: ref(src),
 			manualShowing: ref(true),
 			chosen, closed
@@ -388,7 +384,6 @@ export async function pickReaction(src: HTMLElement, chosen, closed) {
 			closed: () => {
 				reactionPicker.src.value = null;
 				reactionPicker.closed();
-				reactionPicker.opening = false;
 			}
 		});
 	}