I’m in the process of changing map.atownsend.org.uk so that zoom level 13 can still be used as a “route planning” layer but walls, hedges and ditches don’t get in the way. This wasn’t originally a problem, but people have since mapped lots of fences, hedges,walls and ditches, and it can be difficult to see footpaths at that zoom level now. Here’s a screen showing half new tiles, half old ones:

That corresponds to here on the site and here in OSM. The new version will probably be rolled out in a week or so’s time. Other zoom levels will be unchanged - you’ll still see hedges and ditches a couple of zoom levels earlier than with OSM’s “standard” style, and paths will still be legible 2 or 3 zoom levels earlier.