I usually find it convenient to locate the mouse pointer in the summary (the navigation bar at the bottom of the Ardour window) and scroll to zoom.
However, there seems to be a limit to how much I can scroll. When scrolling up does not zoom anymore, I can still click the PLUS button in the toolbar to zoom in more. These buttons also respect the View > Zoom Focus > Zoom Focus Playhead while scrolling does not.
How can I make scrolling in the navigation bar behave as the PLUS / MINUS buttons on the toolbar? Or maybe I’ll just get used to zooming by keyboard shortcuts…