diff --git a/app/src/protyle/toolbar/InlineMath.ts b/app/src/protyle/toolbar/InlineMath.ts
index 671014033..80b622489 100644
--- a/app/src/protyle/toolbar/InlineMath.ts
+++ b/app/src/protyle/toolbar/InlineMath.ts
@@ -28,7 +28,7 @@ export class InlineMath extends ToolbarItem {
                 let hasMath = false;
                 // https://github.com/siyuan-note/siyuan/issues/6007
                 range.cloneContents().childNodes.forEach((item: HTMLElement) => {
-                    if ((item.nodeType !== 3 && item.getAttribute("data-type").indexOf("inline-math") > -1) ||
+                    if ((item.nodeType !== 3 && (item.getAttribute("data-type") || "").indexOf("inline-math") > -1) ||
                         (item.nodeType == 3 && item.textContent === "")) {
                         // 是否仅选中数学公式
                         hasMath = true;
diff --git a/app/src/protyle/toolbar/index.ts b/app/src/protyle/toolbar/index.ts
index 0dd170343..d97257937 100644
--- a/app/src/protyle/toolbar/index.ts
+++ b/app/src/protyle/toolbar/index.ts
@@ -901,14 +901,15 @@ export class Toolbar {
                 }
                 return;
             }
-            if (this.subElement.clientHeight <= window.innerHeight - nodeRect.bottom || this.subElement.clientHeight <= nodeRect.top) {
+            const bottom = nodeRect.bottom === nodeRect.top ? nodeRect.bottom + 26 : nodeRect.bottom;
+            if (this.subElement.clientHeight <= window.innerHeight - bottom || this.subElement.clientHeight <= nodeRect.top) {
                 if (types.includes("inline-math") || isInlineMemo) {
-                    setPosition(this.subElement, nodeRect.left, nodeRect.bottom, nodeRect.height);
+                    setPosition(this.subElement, nodeRect.left, bottom, nodeRect.height || 26);
                 } else {
-                    setPosition(this.subElement, nodeRect.left + (nodeRect.width - this.subElement.clientWidth) / 2, nodeRect.bottom, nodeRect.height);
+                    setPosition(this.subElement, nodeRect.left + (nodeRect.width - this.subElement.clientWidth) / 2, bottom, nodeRect.height || 26);
                 }
             } else {
-                setPosition(this.subElement, nodeRect.right, nodeRect.bottom);
+                setPosition(this.subElement, nodeRect.right, bottom);
             }
         };
         const headerElement = this.subElement.querySelector(".block__icons");