### Describe the bug / 问题描述 1. 鼠标悬浮显示 2. graph.clear()后报错,并且延迟隐藏 <img width="523" height="199" alt="Image" src="https://github.com/user-attachments/assets/5dc54c11-ba94-4d5a-8b47-32e34b80a195" /> <img width="592" height="531" alt="Image" src="https://github.com/user-attachments/assets/8fe05943-1f9e-4604-8c96-29afa1ac07d4" /> ### Reproduction link / 复现链接 _No response_ ### Steps to Reproduce the Bug or Issue / 重现步骤 _No response_ ### Version / 版本 🆕 5.x ### OS / 操作系统 - [ ] macOS - [x] Windows - [ ] Linux - [ ] Others / 其他 ### Browser / 浏览器 - [ ] Chrome - [x] Edge - [ ] Firefox - [ ] Safari (Limited support / 有限支持) - [ ] IE (Nonsupport / 不支持) - [ ] Others / 其他