Sometimes I work with different version of the same workflow, these would typically be named for instance A_long_workflow_name_version_1, A_long_workflow_name_version_2 etc. Or I have workflows that perform different actions on some object, My_long_feature_delete, My_long_feature_update.
In both cases, the workflow designer cuts off the name shown on the tab, and there's no quick way to see which workflow is active. One either needs to hover the mouse over the tab to show a tooltip, or open the Navigator panel.
I would like to suggest having the full name at least somewhere in the designer, for instance on the status bar, so that it is immediately clear which workflow is active.