src/components/HandsontablePro/index.vue

@@ -2046,6 +2046,7 @@
           };
           removeFilterIconFromColumns();
           syncHybridHeaders();
+          applySelectedRowStyles();
           remasureActionColumnFromDom();
           // remasure/updateSettings 后 HOT 会按原生滚动条再次缩短 clone，需再对齐一次
           scheduleCloneOverlaySync();
@@ -2443,15 +2444,14 @@
     const tbody = hotContainer.value.querySelector('.ht_master tbody');
     if (!tbody) return;
 
+    // HOT 虚拟滚动只渲染可视区行且复用 tr，DOM 下标 ≠ 视觉行号，须按单元格坐标取行
     const rows = tbody.querySelectorAll('tr');
-    rows.forEach((row, index) => {
-      // 移除之前的所有选中状态
-      row.classList.remove('selected-row');
-
-      // 为当前选中的行添加类
-      if (selectedRowIndicesSet.value.has(index)) {
-        row.classList.add('selected-row');
-      }
+    rows.forEach((row) => {
+      const cell = row.querySelector('td, th') as HTMLTableCellElement | null;
+      const visualRow = cell ? hotInstance!.getCoords(cell)?.row : undefined;
+      const selected =
+        typeof visualRow === 'number' && visualRow >= 0 && selectedRowIndicesSet.value.has(visualRow);
+      row.classList.toggle('selected-row', selected);
     });
   };