As far as I can tell, Cura's infill patterns which are self-crossing, such as
triangles, don't do anything special to account for extruding material over the crossing points multiple times. In theory this should produce either a blob around the crossing point, or excess pressure in the extruder due to blockage from the alread-deposited material that will result in over-extrusion after the point is crossed until the excess pressure is dissipated.
Is Cura doing anything to account for this? It doesn't seem to do travel moves across the intersection, but maybe it's adjusting the overall flow to compensate for the crossings "on average".
If not, it seems like crossing points near the walls would be a source of dimensional accuracy problems, which I've seen in tightly confined areas and which I'm looking for a root cause for.