At zoom level 20, the main map shows tracks with imagery, but at zoom level 21, these disappear (as visible in this little screenshot gallery).
I would expect the routes to be visible at all available zoom levels. If there is a reason not to show zoom levels higher than 20, zooming in should be disabled.
At zoom level 20, the main map shows tracks with imagery, but at zoom level 21, these disappear (as visible in this little screenshot gallery).
I would expect the routes to be visible at all available zoom levels. If there is a reason not to show zoom levels higher than 20, zooming in should be disabled.