diff --git a/components/slide-renderer/components/element/ShapeElement/index.tsx b/components/slide-renderer/components/element/ShapeElement/index.tsx
index 4227b9bbcb..90e69dc172 100644
--- a/components/slide-renderer/components/element/ShapeElement/index.tsx
+++ b/components/slide-renderer/components/element/ShapeElement/index.tsx
@@ -63,8 +63,23 @@ export function ShapeElement({ elementInfo, selectElement }: ShapeElementProps)
       defaultColor: '#000000',
     };
     if (!elementInfo.text) return defaultText;
-    return elementInfo.text;
+    return {
+      ...elementInfo.text,
+      content: typeof elementInfo.text.content === 'string' ? elementInfo.text.content : '',
+    };
   }, [elementInfo.text]);
+  const viewBoxWidth =
+    Array.isArray(elementInfo.viewBox) &&
+    Number.isFinite(elementInfo.viewBox[0]) &&
+    elementInfo.viewBox[0] > 0
+      ? elementInfo.viewBox[0]
+      : elementInfo.width || 1;
+  const viewBoxHeight =
+    Array.isArray(elementInfo.viewBox) &&
+    Number.isFinite(elementInfo.viewBox[1]) &&
+    elementInfo.viewBox[1] > 0
+      ? elementInfo.viewBox[1]
+      : elementInfo.height || 1;
 
   // Update text content
   const updateText = useCallback(
@@ -84,7 +99,8 @@ export function ShapeElement({ elementInfo, selectElement }: ShapeElementProps)
   const checkEmptyText = useCallback(() => {
     if (!elementInfo.text) return;
 
-    const pureText = elementInfo.text.content.replace(/<[^>]+>/g, '');
+    const content = typeof elementInfo.text.content === 'string' ? elementInfo.text.content : '';
+    const pureText = content.replace(/<[^>]+>/g, '');
     if (!pureText) {
       // eslint-disable-next-line @typescript-eslint/no-explicit-any -- 'text' is specific to PPTShapeElement, not in keyof PPTElement union
       removeElementProps({ id: elementInfo.id, propName: 'text' as any });
@@ -144,8 +160,8 @@ export function ShapeElement({ elementInfo, selectElement }: ShapeElementProps)
               )}
             </defs>
             <g
-              transform={`scale(${elementInfo.width / elementInfo.viewBox[0]}, ${
-                elementInfo.height / elementInfo.viewBox[1]
+              transform={`scale(${elementInfo.width / viewBoxWidth}, ${
+                elementInfo.height / viewBoxHeight
               }) translate(0,0) matrix(1,0,0,1,0,0)`}
             >
               <path
diff --git a/components/slide-renderer/components/element/TableElement/StaticTable.tsx b/components/slide-renderer/components/element/TableElement/StaticTable.tsx
index e15b38c3c5..f09452bc2d 100644
--- a/components/slide-renderer/components/element/TableElement/StaticTable.tsx
+++ b/components/slide-renderer/components/element/TableElement/StaticTable.tsx
@@ -15,8 +15,13 @@ interface StaticTableProps {
  */
 export function StaticTable({ elementInfo }: StaticTableProps) {
   const { width, data, colWidths, cellMinHeight, outline, theme } = elementInfo;
+  const tableData = useMemo(() => (Array.isArray(data) ? data : []), [data]);
+  const tableColWidths = useMemo(() => (Array.isArray(colWidths) ? colWidths : []), [colWidths]);
+  const safeWidth = Number.isFinite(width) && width > 0 ? width : 1;
+  const safeCellMinHeight =
+    Number.isFinite(cellMinHeight) && cellMinHeight >= 0 ? cellMinHeight : 40;
 
-  const hiddenCells = useMemo(() => getHiddenCells(data), [data]);
+  const hiddenCells = useMemo(() => getHiddenCells(tableData), [tableData]);
 
   const [subThemeDark, subThemeLight] = useMemo(() => {
     if (!theme) return ['', ''];
@@ -42,8 +47,8 @@ export function StaticTable({ elementInfo }: StaticTableProps) {
     if (cellBackcolor) return cellBackcolor;
     if (!theme) return undefined;
 
-    const rowCount = data.length;
-    const colCount = data[0]?.length ?? 0;
+    const rowCount = tableData.length;
+    const colCount = tableData[0]?.length ?? 0;
 
     // Row header (first row) gets theme color
     if (theme.rowHeader && rowIdx === 0) return theme.color;
@@ -66,7 +71,7 @@ export function StaticTable({ elementInfo }: StaticTableProps) {
    */
   const getHeaderTextColor = (rowIdx: number): string | undefined => {
     if (!theme) return undefined;
-    const rowCount = data.length;
+    const rowCount = tableData.length;
     if (theme.rowHeader && rowIdx === 0) return '#fff';
     if (theme.rowFooter && rowIdx === rowCount - 1) return '#fff';
     return undefined;
@@ -81,19 +86,22 @@ export function StaticTable({ elementInfo }: StaticTableProps) {
       }}
     >
       <colgroup>
-        {colWidths.map((w, i) => (
-          <col key={i} style={{ width: `${w * width}px` }} />
+        {tableColWidths.map((w, i) => (
+          <col key={i} style={{ width: `${(Number.isFinite(w) ? w : 1) * safeWidth}px` }} />
         ))}
       </colgroup>
       <tbody>
-        {data.map((row, rowIdx) => (
-          <tr key={rowIdx} style={{ height: `${cellMinHeight}px` }}>
-            {row.map((cell, colIdx) => {
+        {tableData.map((row, rowIdx) => (
+          <tr key={rowIdx} style={{ height: `${safeCellMinHeight}px` }}>
+            {(Array.isArray(row) ? row : []).map((cell, colIdx) => {
               if (hiddenCells.has(`${rowIdx}_${colIdx}`)) return null;
+              if (!cell) return null;
 
               const bgColor = getCellBg(rowIdx, colIdx, cell.style?.backcolor);
               const headerColor = getHeaderTextColor(rowIdx);
               const textStyle = getTextStyle(cell.style);
+              const colspan = Number.isFinite(cell.colspan) && cell.colspan > 0 ? cell.colspan : 1;
+              const rowspan = Number.isFinite(cell.rowspan) && cell.rowspan > 0 ? cell.rowspan : 1;
 
               // Header text color should be overridden only if cell doesn't have its own color
               if (headerColor && !cell.style?.color) {
@@ -102,9 +110,9 @@ export function StaticTable({ elementInfo }: StaticTableProps) {
 
               return (
                 <td
-                  key={cell.id}
-                  colSpan={cell.colspan > 1 ? cell.colspan : undefined}
-                  rowSpan={cell.rowspan > 1 ? cell.rowspan : undefined}
+                  key={cell.id || `${rowIdx}-${colIdx}`}
+                  colSpan={colspan > 1 ? colspan : undefined}
+                  rowSpan={rowspan > 1 ? rowspan : undefined}
                   style={{
                     border: borderStyle,
                     backgroundColor: bgColor,
diff --git a/components/slide-renderer/components/element/TableElement/tableUtils.ts b/components/slide-renderer/components/element/TableElement/tableUtils.ts
index 6bedbbca4b..377284e604 100644
--- a/components/slide-renderer/components/element/TableElement/tableUtils.ts
+++ b/components/slide-renderer/components/element/TableElement/tableUtils.ts
@@ -27,7 +27,8 @@ export function getTextStyle(style?: TableCellStyle): CSSProperties {
 /**
  * Format text: convert \n to <br/> and spaces to &nbsp;
  */
-export function formatText(text: string): string {
+export function formatText(text: unknown): string {
+  if (typeof text !== 'string') return '';
   return text.replace(/\n/g, '<br/>').replace(/ /g, '&nbsp;');
 }
 
@@ -39,16 +40,19 @@ export function getHiddenCells(data: TableCell[][]): Set<string> {
   const hidden = new Set<string>();
 
   for (let rowIdx = 0; rowIdx < data.length; rowIdx++) {
+    const row = data[rowIdx];
+    if (!Array.isArray(row)) continue;
+
     let realColIdx = 0;
-    for (let colIdx = 0; colIdx < data[rowIdx].length; colIdx++) {
+    for (let colIdx = 0; colIdx < row.length; colIdx++) {
       // Skip positions already occupied by a previous merge
       while (hidden.has(`${rowIdx}_${realColIdx}`)) {
         realColIdx++;
       }
 
-      const cell = data[rowIdx][colIdx];
-      const colspan = cell.colspan ?? 1;
-      const rowspan = cell.rowspan ?? 1;
+      const cell = row[colIdx];
+      const colspan = Number.isFinite(cell?.colspan) && cell.colspan > 0 ? cell.colspan : 1;
+      const rowspan = Number.isFinite(cell?.rowspan) && cell.rowspan > 0 ? cell.rowspan : 1;
 
       if (colspan > 1 || rowspan > 1) {
         for (let r = 0; r < rowspan; r++) {
diff --git a/components/slide-renderer/components/element/TextElement/index.tsx b/components/slide-renderer/components/element/TextElement/index.tsx
index 8171285aa0..147471e098 100644
--- a/components/slide-renderer/components/element/TextElement/index.tsx
+++ b/components/slide-renderer/components/element/TextElement/index.tsx
@@ -147,7 +147,8 @@ export function TextElement({ elementInfo, selectElement }: TextElementProps) {
   const checkEmptyText = useCallback(() => {
     const debouncedCheck = debounce(
       () => {
-        const pureText = elementInfo.content.replace(/<[^>]+>/g, '');
+        const content = typeof elementInfo.content === 'string' ? elementInfo.content : '';
+        const pureText = content.replace(/<[^>]+>/g, '');
         if (!pureText) deleteElement(elementInfo.id);
       },
       300,
@@ -209,7 +210,7 @@ export function TextElement({ elementInfo, selectElement }: TextElementProps) {
               defaultColor={elementInfo.defaultColor}
               defaultFontName={elementInfo.defaultFontName}
               editable={!elementInfo.lock}
-              value={elementInfo.content}
+              value={typeof elementInfo.content === 'string' ? elementInfo.content : ''}
               onUpdate={({ value, ignore }) => updateContent(value, ignore)}
               onMouseDown={(e) => handleSelectElement(e as React.MouseEvent, false)}
             />
diff --git a/tests/slide-renderer/table-utils.test.ts b/tests/slide-renderer/table-utils.test.ts
new file mode 100644
index 0000000000..3cce3fe7ef
--- /dev/null
+++ b/tests/slide-renderer/table-utils.test.ts
@@ -0,0 +1,12 @@
+import { describe, expect, it } from 'vitest';
+
+import { getHiddenCells } from '@/components/slide-renderer/components/element/TableElement/tableUtils';
+
+describe('tableUtils', () => {
+  it('tolerates malformed rows and null cells when computing hidden cells', () => {
+    const data = [[{ id: 'a', text: 'x', colspan: 2 }, null], null, 5] as never;
+
+    expect(() => getHiddenCells(data)).not.toThrow();
+    expect(getHiddenCells(data)).toEqual(new Set(['0_1']));
+  });
+});