10.24.9

LTS

October 06, 2025

Mendix Studio Pro is our low-code IDE for professional developers. It's a powerful visual model-driven development environment to build apps on the Mendix Platform. With Studio Pro you can easily create, change, integrate, test and deploy your applications, all in one place. Moreover, you can manage branch lines and security as well as extend your app with custom code using the built-in editors. Click 'Download Studio Pro' to get the installer for free (Windows OS required*). Learn more about the installation and the Studio Pro capabilities in our documentation. Not a professional developer? Learn How Mendix supports different developer profiles .Before installing, please read the Release Notes to learn about improvements, bug fixes, backwards compatibility, breaking changes and known issues. *If you are using a Mac, check out these instructions first.

Release Notes - **Release date: October 6, 2025** ### Improvements - We improved the rendering performance of repeating widgets in Design mode, by only rendering a single repeat for widgets within a snippet call, parent layout, or nested within another repeating widget. ### Fixes - We fixed an issue in the React client where autofocus was incorrectly triggered by dynamically loaded widgets, causing combo boxes that use a widget with a dynamic source in their custom content to unexpectedly lose focus and close. (Ticket 254768) - We fixed an issue where **Import Mappings** using 'Find an object (by key)' or 'Call a microflow' did not create an object for valid input. (Tickets 255130, 260462) - We fixed an issue where Node.js would run out of memory during the bundling process of very large, complex applications using the React client. (Ticket 257472) - In the logic editors, we fixed the zoom in and zoom out behaviors of error-handling icons. (Ticket 258424) - We improved the performance of the tree control that allows you to select elements for **Message Definitions**, **Import Mappings**, and **Export Mappings**. (Ticket 258606) - We fixed an issue where a Java action could still cause compilation errors, even if excluded from the project. (Ticket 259414) - We fixed an issue where, when there were no conflicting changes, users were not properly informed and metadata was missing due to cherry picking. - We fixed a few memory leaks in the React client, most notably when closing and open pages. - We fixed a memory leak which occurred when re-opening a project, or switching branches in Studio Pro. - We fixed an issue for **Export Mappings** where a recursive XSD structure was not properly marked as invalid in cases where more than 1000 mandatory elements were auto-selected. - We fixed an issue in Studio Pro where restarting Windows with an open app and then opening the app again would result in a warning dialog window about the app already being open. - We fixed an issue where task queue tasks were not able to mark themselves as completed after execution.