Hi,
The code I'm using in my project is far too complex to include here, but I've managed to reproduce the problem with some simple code:
publicclassDocumentCreator{ protectedreadonlyThemableFontFamily DefaultFontFamily = newThemableFontFamily(newFontFamily("Calibri")); protectedreadonlyThemableColor DefaultForeground = newThemableColor(Colors.Black); protectedreadonlydoubleDefaultFontSize = 14.0; publicvoidCreateDocument() { RadFlowDocument document = newRadFlowDocument(); SetupStyles(document); CreateSection(document, "Document title"); var docxProvider = newDocxFormatProvider(); using(Stream stream = File.Create("Sample document.docx")) { docxProvider.Export(document, stream); } } publicvoidSetupStyles(RadFlowDocument document) { var heading1 = document.StyleRepository.AddBuiltInStyle(BuiltInStyleNames.GetHeadingStyleIdByIndex(1)); heading1.CharacterProperties.FontFamily.LocalValue = DefaultFontFamily; heading1.CharacterProperties.FontSize.LocalValue = 32.0; heading1.CharacterProperties.FontWeight.LocalValue = FontWeights.Bold; heading1.CharacterProperties.ForegroundColor.LocalValue = DefaultForeground; var heading2 = document.StyleRepository.AddBuiltInStyle(BuiltInStyleNames.GetHeadingStyleIdByIndex(2)); heading2.CharacterProperties.FontFamily.LocalValue = DefaultFontFamily; heading2.CharacterProperties.FontSize.LocalValue = 24.0; heading2.CharacterProperties.FontWeight.LocalValue = FontWeights.Bold; heading2.CharacterProperties.ForegroundColor.LocalValue = DefaultForeground; document.DefaultStyle.CharacterProperties.FontFamily.LocalValue = DefaultFontFamily; document.DefaultStyle.CharacterProperties.FontSize.LocalValue = DefaultFontSize; document.DefaultStyle.CharacterProperties.FontWeight.LocalValue = FontWeights.Normal; document.DefaultStyle.CharacterProperties.ForegroundColor.LocalValue = DefaultForeground; } publicvoidCreateSection(RadFlowDocument document, stringtitle) { RadFlowDocumentEditor editor = newRadFlowDocumentEditor(document); Section section = document.Sections.AddSection(); section.SectionType = SectionType.Continuous; var paragraph = section.Blocks.AddParagraph(); editor.MoveToParagraphStart(paragraph); paragraph.StyleId = BuiltInStyleNames.GetHeadingStyleIdByIndex(1); editor.InsertText(title); InsertTable(section, editor, "Table 1", newList<int> { 1, 2, 3, 4, 5 }); InsertTable(section, editor, "Table 2", newList<int> { 2, 3, 4, 5, 6 }); InsertTable(section, editor, "Table 3", newList<int> { 3, 4, 5, 6, 7 }); } publicvoidInsertTable(Section section, RadFlowDocumentEditor editor, stringtitle, IList<int> values) { var paragraph = section.Blocks.AddParagraph(); editor.MoveToParagraphStart(paragraph); paragraph.StyleId = BuiltInStyleNames.GetHeadingStyleIdByIndex(2); editor.InsertText(title); Table table = section.Blocks.AddTable(); var row = table.Rows.AddTableRow(); var cell = row.Cells.AddTableCell(); cell.PreferredWidth = newTableWidthUnit(TableWidthUnitType.Fixed, 100); SetCellText(editor, cell, "Column 1", bold: true, background: newThemableColor(Colors.LightGray)); cell = row.Cells.AddTableCell(); cell.PreferredWidth = newTableWidthUnit(TableWidthUnitType.Fixed, 100); SetCellText(editor, cell, "Column 2", bold: true, background: newThemableColor(Colors.LightGray)); foreach(var value invalues) { row = table.Rows.AddTableRow(); cell = row.Cells.AddTableCell(); SetCellText(editor, cell, ((char)('@'+ value)).ToString()); cell = row.Cells.AddTableCell(); SetCellText(editor, cell, value.ToString()); } } protectedvoidSetCellText(RadFlowDocumentEditor editor, TableCell cell, stringtext, stringfontFamily = null, double? fontSize = null, bool? bold = null, bool? italic = null, TableCellBorders borders = null, ThemableColor background = null, ThemableColor foreground = null, Alignment? horizontalAlignment = null, VerticalAlignment? verticalAlignment = null) { cell.IgnoreCellMarkerInRowHeightCalculation = true; cell.Padding = newPadding(1); var paragraph = cell.Blocks.AddParagraph(); paragraph.StyleId = BuiltInStyleNames.NormalStyleId; paragraph.Properties.SpacingBefore.LocalValue = 0; paragraph.Properties.SpacingAfter.LocalValue = 0; editor.MoveToParagraphStart(paragraph); if(borders != null) cell.Borders = borders; if(background != null) cell.Shading.BackgroundColor = background; editor.CharacterFormatting.FontFamily.LocalValue = string.IsNullOrEmpty(fontFamily) ? DefaultFontFamily : newThemableFontFamily(fontFamily); editor.CharacterFormatting.FontSize.LocalValue = fontSize ?? DefaultFontSize; editor.CharacterFormatting.FontWeight.LocalValue = (bold ?? false) ? FontWeights.Bold : FontWeights.Normal; editor.CharacterFormatting.FontStyle.LocalValue = (italic ?? false) ? FontStyles.Italic : FontStyles.Normal; editor.CharacterFormatting.ForegroundColor.LocalValue = foreground ?? DefaultForeground; cell.VerticalAlignment = verticalAlignment != null? verticalAlignment.Value : VerticalAlignment.Center; paragraph.TextAlignment = horizontalAlignment != null? horizontalAlignment.Value : Alignment.Center; editor.InsertText(string.IsNullOrEmpty(text) ? " ": text); }}