Bug Report: Describe the issue

**Describe the bug**
A clear and concise description of what the bug is.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '...'
3. Scroll down to '...'
4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment (please complete the following information):**
- OS: [e.g. Windows, MacOS, Linux]
- Browser [e.g. chrome, safari]
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.

Issue 內文只有預設的 bug 回報範本，沒有列出任何檔案、測試或進入點。請先提供具體症狀、重現步驟、預期行為和環境；在明確受影響的行為和範圍之前，無法定義「done」。

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