I don't want to spread confusion, but I am reluctant to spell out what I have spotted because I'm not completely sure that it isn't just an accident of grid construction.
What I will say is that if I'm right (and that's a big if) then those solvers going for the items in straight paths should be correct. There is a key phrase in the penultimate sentence of the preamble that could provide a cryptic clue to something I noticed in the grid.
If you don't see what I'm getting at then just go with your instincts.