[Table] 虚拟滚动问题：fix右列样式没对齐问题 + 滚到下面行的线消失了 + 合并单元格有问题

[tingtingcheng6]

tdesign-react 版本

1.15.1

重现链接

No response

重现步骤

    <Table
      rowKey='id'
      data={list}
      columns={getTableColumns({
        abnormalType,
        days,
        canEdit,
        onRemarkEditedCell,
      })}
      rowspanAndColspan={rowspanAndColspan}
      className={styles.commonFullTable}
      loading={loading}
      empty={<Empty />}
      scroll={{ type: 'virtual' }}
      lazyLoad
    />

1、右侧fixed的问题
{
title: '备注',
colKey: 'mark',
fixed: 'right',
width: 200,
}
上面：

滚到下面：

2、滚到下面行的线消失了

3、合并列失效

期望结果

三个问题正常展示

实际结果

No response

框架版本

No response

浏览器版本

No response

系统版本

No response

Node版本

No response

补充说明

No response

[github-actions]

👋 @tingtingcheng6，感谢给 TDesign 提出了 issue。
请根据 issue 模版确保背景信息的完善，我们将调查并尽快回复你。

[RylanBot]

问题 1 已修复，预计下个版本发布 #3792
问题 2 和 3 无法复现
请提供可复现的在线代码 DEMO

[RylanBot]

全部 Bug 场景均已可复现...接下来会进行修复并在某个版本发布

完整 DEMO 存档

import React, { useMemo } from 'react';
import { CheckCircleFilledIcon, CloseCircleFilledIcon, ErrorCircleFilledIcon } from 'tdesign-icons-react';
import { Link, Space, Table, Tag } from 'tdesign-react';

import type { TableProps } from 'tdesign-react';

const statusNameListMap = {
  0: { label: '正常', theme: 'success', icon: <CheckCircleFilledIcon /> },
  1: { label: '异常', theme: 'danger', icon: <CloseCircleFilledIcon /> },
  2: { label: '警告', theme: 'warning', icon: <ErrorCircleFilledIcon /> },
};

// 生成大量数据
const generateData = (count: number) => {
  const data: any[] = [];
  const departments = ['技术部', '产品部', '运营部', '市场部'];

  // 计算每个部门的人数
  const peoplePerDept = Math.ceil(count / departments.length);

  let currentId = 1;

  departments.forEach((dept, deptIndex) => {
    // 为每个部门生成指定数量的人员
    const deptSize =
      deptIndex === departments.length - 1
        ? count - peoplePerDept * (departments.length - 1) // 最后一个部门处理余数
        : peoplePerDept;

    for (let i = 0; i < deptSize; i++) {
      const globalIndex = currentId - 1;
      data.push({
        id: currentId,
        name: `${dept.replace('部', '')}员工${i + 1}`,
        department: dept,
        email: `user${currentId}@${dept.toLowerCase().replace('部', '')}.com`,
        phone: `138${String(globalIndex).padStart(8, '0')}`,
        status: globalIndex % 3,
        score: Math.floor(Math.random() * 100),
        joinDate: `2023-${String((globalIndex % 12) + 1).padStart(2, '0')}-${String((globalIndex % 28) + 1).padStart(
          2,
          '0',
        )}`,
        address: `北京市朝阳区${dept}办公楼${i + 1}号`,
        project: ['项目A', '项目B', '项目C', '项目D'][deptIndex % 4],
        workYears: Math.floor(i / 3) + 1,
        salary: (deptIndex + 1) * 8000 + i * 1000 + Math.floor(Math.random() * 3000),
        mark: i % 3 === 0 ? `${dept}重要成员${i + 1}` : `${dept}普通成员${i + 1}`,
      });
      currentId++;
    }
  });

  return data;
};

export default function VirtualScrollIssuesDemo() {
  const data = useMemo(() => generateData(500), []);

  // 合并单元格逻辑 - 按部门合并
  const rowspanAndColspan = useMemo(() => {
    const spanMap = new Map();

    // 计算每个部门的行数
    const departmentCounts = new Map();
    data.forEach((item, index) => {
      const dept = item.department;
      if (!departmentCounts.has(dept)) {
        departmentCounts.set(dept, []);
      }
      departmentCounts.get(dept).push(index);
    });

    // 设置合并单元格
    departmentCounts.forEach((indexes) => {
      indexes.forEach((rowIndex, i) => {
        if (i === 0) {
          // 第一行显示合并的单元格
          spanMap.set(`${rowIndex}_department`, {
            rowspan: indexes.length,
            colspan: 1,
          });
        } else {
          // 其他行隐藏
          spanMap.set(`${rowIndex}_department`, {
            rowspan: 0,
            colspan: 0,
          });
        }
      });
    });

    return ({ rowIndex, col }) => {
      const key = `${rowIndex}_${col.colKey}`;
      return spanMap.get(key);
    };
  }, [data]);

  const columns: TableProps['columns'] = [
    {
      title: 'ID',
      colKey: 'id',
      width: 80,
      fixed: 'left',
    },
    {
      title: '部门',
      colKey: 'department',
      width: 120,
      // 这一列会被合并
    },
    {
      title: '姓名',
      colKey: 'name',
      width: 120,
      fixed: 'left',
    },
    {
      title: '邮箱',
      colKey: 'email',
      width: 200,
      ellipsis: true,
    },
    {
      title: '电话',
      colKey: 'phone',
      width: 140,
    },
    {
      title: '状态',
      colKey: 'status',
      width: 120,
      cell: ({ row }) => {
        const { status } = row;
        return (
          <Tag
            shape="round"
            theme={statusNameListMap[status].theme}
            variant="light-outline"
            icon={statusNameListMap[status].icon}
          >
            {statusNameListMap[status].label}
          </Tag>
        );
      },
    },
    {
      title: '评分',
      colKey: 'score',
      width: 100,
    },
    {
      title: '入职日期',
      colKey: 'joinDate',
      width: 120,
    },
    {
      title: '地址',
      colKey: 'address',
      width: 250,
      ellipsis: true,
    },
    {
      title: '项目',
      colKey: 'project',
      width: 120,
    },
    {
      title: '工作年限',
      colKey: 'workYears',
      width: 100,
    },
    {
      title: '薪资',
      colKey: 'salary',
      width: 120,
    },
    {
      title: '操作',
      colKey: 'operation',
      width: 150,
      fixed: 'right',
      cell: () => (
        <Space size="small">
          <Link theme="primary" size="small">
            编辑
          </Link>
          <Link theme="danger" size="small">
            删除
          </Link>
        </Space>
      ),
    },
    {
      title: '备注',
      colKey: 'mark',
      fixed: 'right',
      width: 200,
      ellipsis: true,
    },
  ];

  return (
    <div style={{ width: '1000px' }}>
      <Table
        maxHeight={600}
        rowKey="id"
        data={data}
        columns={columns}
        rowspanAndColspan={rowspanAndColspan}
        scroll={{ type: 'virtual' }}
        bordered
      />
    </div>
  );
}