See:
In earlier versions of FME (for example 2023.2), the Bookmark Navigator was available as a toolbar option under Tools → FME Options → Toolbars. This feature seems to have been removed in 2024.2. I am not sure if it has returned in 2025, and the FME documentation does not clearly state which toolbar options are currently available or what they do.
While bookmarks are still accessible through the Navigator panel, that is not an effective substitute for those who rely on the Bookmark Navigator toolbar. The Navigator is typically used for managing transformers, parameters, database connections, and other elements. In larger workspaces, bookmarks get pushed out of view and require vertical scrolling, which is not only annoying but also time-consuming. It is not a UI element with a fixed or easily reachable position.
The Bookmark Navigator in the toolbar provided immediate, horizontal access and required very little screen space. If users choose to enable it, the impact on toolbar real estate is minimal. It was especially useful for jumping between major workspace sections and worked well in presentations or collaborative reviews.
As a consultant working with various organisations, I found this feature to be a good motivator for adopting clear and consistent bookmark titles.
Please consider restoring this option, or making it available as a configurable UI element in future versions.