fix: fixed a bug that prevented the secondary tile rendering engine to work
fix: fixed a bug that prevented the secondary tile rendering engine to work

crs4/ome_seadragon,crs4/ome_seadragon,lucalianas/ome_seadragon,lucalianas/ome_seadragon,lucalianas/ome_seadragon,crs4/ome_seadragon,crs4/ome_seadragon,lucalianas/ome_seadragon