diff --git a/package.json b/package.json
index 26121e1..393ccb7 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "@tauri-apps/api": "^2.0.0",
     "@tauri-apps/plugin-clipboard-manager": "^2.0.0",
     "@tauri-apps/plugin-opener": "^2.0.0",
+    "@xterm/addon-canvas": "^0.7.0",
     "@xterm/addon-fit": "^0.10.0",
     "@xterm/addon-web-links": "^0.12.0",
     "@xterm/xterm": "^5.5.0",
diff --git a/src/components/XtermPane.tsx b/src/components/XtermPane.tsx
index de4309a..1e76493 100644
--- a/src/components/XtermPane.tsx
+++ b/src/components/XtermPane.tsx
@@ -2,6 +2,7 @@ import { useRef, useEffect } from "react";
 import { Terminal } from "@xterm/xterm";
 import { FitAddon } from "@xterm/addon-fit";
 import { WebLinksAddon } from "@xterm/addon-web-links";
+import { CanvasAddon } from "@xterm/addon-canvas";
 import type { UnlistenFn } from "@tauri-apps/api/event";
 import {
   readText as clipboardReadText,
@@ -149,6 +150,23 @@ export default function XtermPane({
     );
     term.open(container);
 
+    // Use the canvas renderer instead of xterm's default DOM renderer.
+    // The DOM renderer draws the cursor as a separate layered element and,
+    // under the Claude TUI's rapid hide/show (\x1b[?25l/h) + cursorBlink,
+    // leaves a stale cursor block frozen where the cursor used to be (the
+    // "stuck white marker"). The canvas renderer composites the cursor into
+    // the same surface as the text, so hide/show transitions clear cleanly.
+    // Chosen over the WebGL addon because tiletopia runs many panes at once
+    // and Chromium/WebView2 caps live WebGL contexts (~16) — canvas has no
+    // such hard limit. Loaded after open() so the core renderer exists.
+    try {
+      term.loadAddon(new CanvasAddon());
+    } catch (e) {
+      // If canvas init fails for any reason, xterm falls back to the DOM
+      // renderer on its own — degrade gracefully rather than blank the pane.
+      console.warn("CanvasAddon load failed; using DOM renderer:", e);
+    }
+
     // Initial size — fit before asking the PTY for its dimensions.
     fit.fit();