Issue

The business necessitates the capability to open multiple instances of the same application across various browser tabs. However, regardless of the number of tabs opened, the application consistently utilizes the same user session. This means that any actions taken or changes made in one tab will reflect in all other tabs since they are all linked to the same session.

Environment

Applications hosted in any deployment type

Cause

This requirement cannot be fulfilled within the constraints of standard application development.

The application's cookies are shared across all tabs; therefore, it is not possible to establish distinct sessions by opening a new tab in the browser.

Solution/Workaround

The option available is to either switch to a different web browser or utilize the incognito mode available in your current browser. 

While there are certain browser extensions that can fulfill this requirement, it's important to note that these extensions will not be supported by Mendix.

Additional information 

Session Management | Mendix Documentation