Essential Studio® for Document Processing - v33.1.46 Release Notes

v33.1.46
March 31, 2026
Test Results: 234348 Success , 0 Failure

PDF Library

.NET PDF Library

Bug Fixes

  • I812125 - Fixed an issue where an incorrect page was removed during page removal.
  • I820211 - Fixed incorrect rendering of PDF images in Chrome.
  • I800799 - Fixed missing spaces in extracted PDF text.
  • I812799 - Fixed an issue where annotation comments were lost after deletion and document reload.
  • I820106 - Fixed a NullReferenceException during PDF flattening and missing annotations in the saved output.

JavaScript PDF Library

Bug Fixes

  • I821376 - Fixed an issue where free text annotation content was lost when the text contained backslashes.
  • I824741 - Fixed an issue where grouped checkbox fields behaved like radio buttons when the export value was empty.
  • I821363 - Fixed an issue where the destination page index of a document link annotation was returned incorrectly.

Word Library

.NET Word Library

Bug Fixes

  • I818045 - Insert Revisions are now accepted properly for nested tables after calling AcceptAll API.
  • I820112 - Corruption will no longer occur when resaving the DOCX document with GroupShape containing custom shape.
  • I822145 - BlockContentControl with section property is now preserved properly after re-saving a DOCX document.
  • I782964 - JPEG image is now preserved properly after appending image using AppendPicture API.
  • I818043 - Revisions are now preserved properly for nested table after calling AcceptChanges API.
  • I788183 - Hanging issue will no longer be occurs while converting a Word document has paragraph with group shape split across pages to PDF.
  • I820238 - Underlines in justified paragraphs are now preserved properly when converting Word document to PDF.
  • I819207 - Textbox with behind text wrapping is now preserved properly while converting Word document to PDF.
  • I819207 - Picture with horizontal position inside table is now preserved properly while converting Word to PDF.
  • I818073 - DocProperty field with multiple paragraphs is now preserved properly while converting Word to PDF.

Excel Library

.NET Excel Library

Bug Fixes

  • #I028909 - VbaProject.ParseDirStream now correctly rethrow internal exceptions when encountering a malformed VBA directory stream.
  • #I818520 - Auto filter sorting is now preserved correctly when priorities are set for multiple sort fields.
  • #I821198 - Numbers with text format are now preserved correctly after sorting.
  • #I811867 - Performance delays during Excel to PDF conversion with conditional formatting formulas have been resolved.

PDF Viewer

Web PDF Viewer (Javascript, Angular, React, Vue, ASP.NET Core & MVC)

Bug Fixes

  • I821668 - Fixed an issue where the browser default print dialog appeared even when enablePrint was set to false while the PDF Viewer was in focus.
  • I819221 - Resolved an exception that occurred when printing a PDF in Microsoft Edge with the AlwaysOpenPdfExternally policy enabled.
  • I821467 - Fixed an issue where Free Text annotation bounds were incorrectly exported after updating bounds using the editAnnotation method.
  • I821182 - Resolved an issue where the findText method returned incorrect bound values for PDF documents that contain CropBox and MediaBox values.
  • I822227 - Fixed an issue where annotations were not rendered in Standalone rendering mode for the customer provided PDF document.

.NET MAUI PDF Viewer

Bug Fixes

  • #I823295 - The PDF Viewer no longer crashes due to a layout cycle when loading a specific PDF on Windows.

WPF PDF Viewer

Bug Fixes

  • I821109 - InvalidCastException will no longer be thrown while clicking Custom stamp menu.
  • I812125 - Incorrect page deletion will no longer occur in Organize page.
  • I692348 - Improved memory optimization while adding and removing annotation programmatically.

DOCX Editor

Web DOCX Editor (Javascript, Angular, React, Vue, ASP.NET Core & MVC)

Bug Fixes

#I818359 - Fixed an issue where underline formatting was not removed when choosing Ignore Once.
#I804008 - Resolved text overlapping issues when using both machine fonts and the custom font API.
#I810045 - Fixed an issue where the font size dropdown did not allow setting half-point values.
#I816757 - Fixed an issue where automatic hyperlink conversion failed for long links.
#I820417 - Resolved an issue where pasting text added an unwanted closing HTML tag.
#I814760 - Fixed multiple issues related to spell check.
#I818705 - Fixed a script error that occurred when copying the entire document content using Ctrl + A and Ctrl + C.
#I817043 - Fixed an issue where deleting text caused content to shift to an extra page.
#I819206 - Fixed an issue where drag-and-drop incorrectly allowed content to be moved into non-editable regions.
#I819095 - Resolved a browser freezing issue that occurred when continuously pasting content with spell check enabled.
#I810021 - Fixed an issue where page numbers were displayed incorrectly for partially numbered sections.
#I814014 - Fixed an issue where the date picker was unresponsive when selecting Today.
#I800589 - Resolved an issue where table positioning shifted when toggling between layouts.
#I815790 - Fixed an issue where the ribbon remained active when the document was read-only.
#I806986 - Improved usability when resizing by fixing issues with grabbing borders.
#I800985 - Fixed table formatting misalignment that occurred after saving and reopening the document.
#I795470 - Fixed an issue where English text was not appended correctly after Arabic input.
#F72948 - Fixed an issue where line spacing values were not retained after being set.
#I806994 - Fixed an issue where empty comments were added for other users in Web Layout mode during collaborative editing.
#I818405 - Fixed an issue where the Form Field pop-up appeared during multiple selection.
#I805914 - Fixed an auto-save script error that occurred during initialization.

Blazor DOCX Editor

Bug Fixes

#I820121 - Resolved an issue with the Undo button in Form Fields.
#I803156 - Fixed an issue where invalid input was permitted in specialized date and number Form Fields.
#I800889 - Fixed an issue where the Track Changes pane remained visible when revisions were hidden.
#I818359 - Fixed an issue where underline formatting was not removed when choosing Ignore Once.
#I804008 - Resolved text overlapping issues when using both machine fonts and the custom font API.
#I810045 - Fixed an issue where the font size dropdown did not allow setting half-point values.
#I816757 - Fixed an issue where automatic hyperlink conversion failed for long links.
#I820417 - Resolved an issue where pasting text added an unwanted closing HTML tag.
#I814760 - Fixed multiple issues related to spell check.
#I818705 - Fixed a script error that occurred when copying the entire document content using Ctrl + A and Ctrl + C.
#I817043 - Fixed an issue where deleting text caused content to shift to an extra page.
#I819206 - Fixed an issue where drag-and-drop incorrectly allowed content to be moved into non-editable regions.
#I819095 - Resolved a browser freezing issue that occurred when continuously pasting content with spell check enabled.
#I810021 - Fixed an issue where page numbers were displayed incorrectly for partially numbered sections.
#I814014 - Fixed an issue where the date picker was unresponsive when selecting Today.
#I800589 - Resolved an issue where table positioning shifted when toggling between layouts.
#I815790 - Fixed an issue where the ribbon remained active when the document was read-only.
#I806986 - Improved usability when resizing by fixing issues with grabbing borders.
#I800985 - Fixed table formatting misalignment that occurred after saving and reopening the document.
#I795470 - Fixed an issue where English text was not appended correctly after Arabic input.
#F72948 - Fixed an issue where line spacing values were not retained after being set.
#I818405 - Fixed an issue where the Form Field pop-up appeared during multiple selection.
#I805914 - Fixed an auto-save script error that occurred during initialization.

WPF DOCX Editor

Bug Fixes

  • I819816 - The ArgumentOutOfRangeException is no longer thrown when loading documents containing ZWJ‑based inlines.

UWP DOCX Editor

Bug Fixes

  • I819816 - The ArgumentOutOfRangeException is no longer thrown when loading documents containing ZWJ‑based inlines.

Spreadsheet Editor

Blazor Spreadsheet Editor

Bug Fixes

  • #F198204 - Fixed an exception that occurred when loading a corrupted or unsupported Excel file in the spreadsheet.

Test Results

Component Name Platform Test Cases Passed Failed Remarks
Calculate Library .NET 145 145 0 All Passed
DOCX Editor Blazor 1985 1985 0 All Passed
DOCX Editor Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 5183 5183 0 All Passed
Excel Library .NET 37992 37992 0 All Passed
Metafile Renderer .NET 897 897 0 All Passed
PDF Library .NET 14005 14005 0 All Passed
PDF Viewer .NET MAUI 15368 15368 0 All Passed
PDF Viewer Blazor 16523 16523 0 All Passed
PDF Viewer Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 21897 21897 0 All Passed
PDF Viewer Windows Forms 209 209 0 All Passed
PDF Viewer WPF 3040 3040 0 All Passed
PowerPoint Library .NET 54541 54541 0 All Passed
Spreadsheet Blazor 3970 3970 0 All Passed
Spreadsheet Web(Javascript, Angular, React, Vue, ASP.NET Core & MVC) 10803 10803 0 All Passed
Spreadsheet WPF 2715 2715 0 All Passed
Word Library .NET 40996 40996 0 All Passed
Word Library Java 4079 4079 0 All Passed