Hmm, “should”, or “are”? That even cycle lanes that are marked with a continuous line become dashed lines at intersections etc. is normal. Is that what you mean?

As I read the (auto-translation of the) legislation, cycle lanes are actually defined to be exclusively or also dashed lines:

See 729/2018 Tieliikennelaki, Liite 4.1. Pituussuuntaiset tiemerkinnät, K2 Ajokaistaviiva

And I wonder, even if both dashed and continuous lines for cycle lanes exist (sources for that would be great, or mapillary / streetview images), how would the 2-1 roads in Finland differ from normal (dashed) cycle lanes? (After all, we likely want to tag cycle lanes on 2-1 roads different from “proper” cycle lanes)