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🤔 这个 PR 的性质是?
🔗 相关 Issue
#4385
💡 需求背景和解决方案
当表格dom元素未初始化时,会导致pos获取为空,后续逻辑报错,增加判断从而减少错误发生
📝 更新日志
☑️ 请求合并前的自查清单