11.6.1

MTS

January 08, 2026

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: January 8, 2026** ### Improvements - We introduced a new log node named **SystemTask** for logging system management actions. - We improved the performance of runtime statistics collection. - We improved the performance of the **Best Practice Recommender**. It now runs faster while using less memory. - We improved the performance of [document](https://docs.mendix.com/developerportal/general/documents/) operations (**add**, **rename**, **delete**, and more) in the **App Explorer**. - We added batching to the `session keep-alive` and `last action execution update` maintenance tasks. The batch size can be changed using the `SessionKeepAliveUpdateBatchSize` and `LastActionExecutionUpdateBatchSize` runtime settings. - We now support tags for the `tcpjsonlines` log subscriber. These can be configured with the `tags` property in the configuration of the log subscriber. - For the `tcpjsonlines` log subscriber we now include tracing information if `includeTracingInformation` is set to `true` when creating the log subscriber. Additionally, `traceIdAttribute` and `spanIdAttribute` can be passed to configure the attributes of the trace and span IDs in the output JSON log. ### Fixes - We fixed an issue where sorting by column would not work after using the text search on a grid. (Ticket 266400) - We fixed an issue where Studio Pro could crash when importing a font for an [icon collection](https://docs.mendix.com/refguide/icon-collection/). (Ticket 266772) - We fixed an issue where an incorrectly configured [placeholder text](https://docs.mendix.com/refguide/text-box/#placeholder-text) did not show a consistency error and could result in an error during deployment. (Ticket 266923) - We resolved an issue where passwords, when having write access for the password attribute, could be modified directly through the `synchronize_objects` API. - We fixed an issue that was causing excluded modules to be included in **main.scss** when generating layered CSS. - We fixed an issue where pasting a view entity together with its associated persistent entity would cause a freeze and an Oops pop-up window. - In the logic editors, we fixed a bug that causes Maia Explain for Microflows to crash. - We fixed an issue where an Oops pop-up window was displayed when **Edit** > **Find** returned new JSON structure documents. - We fixed an issue in consumed REST services in Studio Pro where sending a request to a URL that contained invalid characters would result in an Oops pop-up window. - We now correctly set the log node name as the "node" attribute and the exception cause as the "cause" attribute for the OpenTelemetry log subscriber. - We fixed an issue where calling the `get_license_information` while using a SALT license would cause an error. ### Breaking Changes - Curly braces in a [placeholder text](https://docs.mendix.com/refguide/text-box/#placeholder-text) (for example, `{Name}`) must now be escaped with an extra opening curly brace (for example, `{{Name}`) to prevent the text from being incorrectly interpreted as a placeholder expression.