That does not make sense.
I have put the reference point at the coordinates indicated by the source (Mindat), which are supposed to be taken from OSM.
In my opinion, whoever put the contour of the municipality excluding all that densely populated area, was wrong.
It is a very small municipality, and it is not usual for its neighborhoods to have their own, identifiable place names.
The Wadi Thaib runs through the entire municipality to the coast, not just its northwestern part.
I have not found any evidence that a neighborhood named after the wadi exists.
I think that everything corresponds to the municipality of Theeb / Thaib and perhaps it would be convenient to delete the node https://www.openstreetmap.org/ node/8128209867 , located on a road, due to duplication and lack of references