Maintenance Release: Gantt 9.1.1, PDF Export Module 0.7.4, Scheduler 7.2.10, Spreadsheet 5.2.8

Our warmest greetings to all DHTMLX followers! The New Year is around the corner, so it is high time to wrap up 2025 with an overview of the latest maintenance updates based on relevant user requests. In December, our team delivered useful bug fixes and enhancements for Gantt, Scheduler, and Spreadsheet components. The export modules to PDF for Gantt and Scheduler also received new updates. In addition, we are pleased to announce the recent migration of the DHTMLX Gantt documentation to the Docusaurus platform. We believe that this step will ensure intuitive navigation, better readability, and simplified long-term maintenance. Check out the details on the new patch versions below.

DHTMLX JS Gantt/React Gantt

9.1.1 (December 15, 2025)

• The error that occurred in React Gantt when the user provided the links prop without the tasks prop (Fixed)
• The issue in React Gantt where reloaded tasks did not have link IDs in their $source and $target properties (Fixed)
• The issue where Gantt opened the inline editor after pressing the Meta key (Fixed)
• The %w date format is not working correctly in CSP production environments (Fixed)
• The issue that prevented group tasks from being displayed as split tasks when they had render=”split” specified (Fixed)
• The issue with the resource grid disappearing on pressing the Tab key after editing a resource cell (Fixed)
• Allow configuring row and taskbar height for virtual tasks (Done)

Check the documentation >

PDF Export Module for Gantt and Scheduler 0.7.3-0.7.4

0.7.3

• Templates for Gantt 9.1 (Updated)

0.7.4

• Background color in multipage PDF headers and footers (Fixed)
• PDF and PNG export on old Scheduler versions (4.2-5.1) (Fixed)
• Scheduler PDF export with watermark (Fixed)

DHTMLX Scheduler

7.2.10 (December 10, 2025)

• The issue where events jumped to the left when being dragged from the last column in the multiday Units view (Fixed)
• The issue where some date cells were missing in specific months in the Month view (Fixed)
• The drag-create issue on mobile devices when using the container_autoresize plugin (Fixed)
• The issue that prevented event creation on double-click after horizontal scrolling in the Units view (Fixed)

Check the documentation >

DHTMLX Spreadsheet 5.2.7 – 5.2.8

5.2.7 (December 9, 2025)

• Export to Excel failing when a sheet contains a cell with a data-validation list (Fixed)
• The issue where a dropdown with a data-validation list stops working when the initial cell value is % (Fixed)
• The problem with the INDEX/MATCH formula breaking after setting focus in the formula bar (Fixed)

5.2.8 (December 15, 2025)

• The problem with losing focus when selecting another cell during formula editing (Fixed)
• The issues with keyboard navigation (Fixed)

Check the documentation >

Download the latest versions of our libraries and test them free of charge for 30 days:

• Gantt trial version
• Scheduler trial version
• Spreadsheet trial version

Many thanks to all our clients for being with us over the years and for actively sharing ideas on how to improve DHTMLX JavaScript UI components. We’ll be happy to continue this collaboration in 2026 to ensure a better developer experience with DHTMLX. Happy holidays and see you next year!