Problem:

In Dynamics 365 Model-Driven Apps (e.g., Customer Service Hub), the left-navigation (sitemap) panel has a fixed width. Long entity or area names get truncated, making it harder for users to quickly identify and access records.

Current Limitation:

The panel width is controlled by the Unified Interface shell and cannot be changed. There are no supported settings or APIs to adjust it.

Proposed Feature:

Add a configurable option (in App Designer or Power Platform Admin Center) to adjust the navigation panel width — for example, 220 px, 260 px, 300 px, or auto-fit.

Benefits:

Improves readability and navigation speed.

Enhances usability for service agents and admins.

Supports various screen sizes and accessibility needs.

Eliminates the need for unsupported CSS/JS workarounds.

Request:

Provide an out-of-the-box setting to control or auto-fit the navigation panel width in the model driven app.