Disabling "Pan score" button breaks direct navigation by the Find command and the Timeline
During editing users most likely will want the score to be repositioned when a selection is made or when a keyboard shortcut (e.g. move to end of score = CTRL+END) is used. However, neither of these happen if the pan score button is not selected. This provides users with the option of not repositioning the score. It is illogical that the button can only be accessed as part of the playback toolbar which is quite likely to be during editing.
Ideally there should be two separate controls: one for panning during playback and one for panning during editing/navigation. However, it is not clear what use case is served by turning off panning during editing/navigation.
At the very least, the existing control should be shown in the view menu where it is always accessible.
The workaround is to keep the playback toolbar visible when editing.