At least part of what is now rendered as "Pionirska proga" is not a cycleway. Only a section from https://www.openstreetmap.org/#map=19/46.048021/14.477009 to https://www.openstreetmap.org/#map=19/46.062426/14.468444 is a cycleway, the rest is just ex-railway with no cycleway on it. Tagging something as ex-railway is appropriate only when some remains are still visible  (or at least a course), however here in the part where the actual cyclepath and ex-railway separate the remaining are not visible and impossible to follow.

Current tagging that was changed with the last changeset is wrong and needs correction.