diff --git a/main.js b/main.js
index 6cf867e..df60d0b 100644
--- a/main.js
+++ b/main.js
@@ -577,7 +577,7 @@ var CardsView = class extends obsidian.ItemView {
     const discardBtn = actions.createEl("button", {
       cls: "keep-cards-capture-discard",
       text: "Discard",
-      attr: { type: "button", title: "Discard (Esc)" }
+      attr: { type: "button", title: "Discard (esc)" }
     });
     discardBtn.addEventListener("mousedown", (e) => e.preventDefault());
     discardBtn.addEventListener("click", () => {
@@ -623,7 +623,8 @@ var CardsView = class extends obsidian.ItemView {
       if (blurTimer) window.clearTimeout(blurTimer);
       blurTimer = window.setTimeout(() => {
         blurTimer = null;
-        if (document.activeElement && wrap.contains(document.activeElement)) return;
+        const doc = activeDocument;
+        if (doc.activeElement && wrap.contains(doc.activeElement)) return;
         submit();
       }, 200);
     });
diff --git a/main.ts b/main.ts
index a83bce7..a5e003b 100644
--- a/main.ts
+++ b/main.ts
@@ -696,7 +696,7 @@ class CardsView extends obsidian.ItemView {
     const discardBtn = actions.createEl('button', {
       cls: 'keep-cards-capture-discard',
       text: 'Discard',
-      attr: { type: 'button', title: 'Discard (Esc)' },
+      attr: { type: 'button', title: 'Discard (esc)' },
     });
     discardBtn.addEventListener('mousedown', (e) => e.preventDefault());
     discardBtn.addEventListener('click', () => {
@@ -750,7 +750,8 @@ class CardsView extends obsidian.ItemView {
       if (blurTimer) window.clearTimeout(blurTimer);
       blurTimer = window.setTimeout(() => {
         blurTimer = null;
-        if (document.activeElement && wrap.contains(document.activeElement)) return;
+        const doc = activeDocument;
+        if (doc.activeElement && wrap.contains(doc.activeElement)) return;
         submit();
       }, 200);
     });