topology not always schema qualifying functions -- AsTopoJSON, topogeom_Add*
These are all I could find scanning thru the topology functions, so this might be all of them
AsTopoJSON makes calls to GetTopoGeomElements qualification.
topogeo_addPoint makes calls to ST_ChangeEdgeGeom without schema qualification.
topogeo_addpolygon makes calls to ST_GetFaceGeometry without schema qualification.
_st_adjacentedges calls GetNodeEdges
addnode(atopology character varying, apoint geometry, allowedgesplitting boolean, setcontainingface boolean DEFAULT false) makes calls to ST_ModEdgeSplit
st_changededgegeo calls to ST_GetFaceGeometry