The wiki on cycleway= is a complete mess, contradicting itself and previous versions. Moreover the situation on the road (https://www.mapillary.com/app/?focus=photo&lat=50.8566927&lng=4.3618924&z=8.490860234189867&pKey=1087835922491330) does not answer to anything in the highway code, but it seems to be meant as a cycleway=lane. and in Brussels usually is mapped as such, though your mileage may vary.