Fix T44320: UV island overlap considered linked

source/blender/editors/uvedit/uvedit_ops.c

@@ -1135,7 +1135,9 @@ static void uv_select_linked(Scene *scene, Image *ima, BMEditMesh *em, const flo
 	const int cd_poly_tex_offset = CustomData_get_offset(&em->bm->pdata, CD_MTEXPOLY);
 
 	BM_mesh_elem_table_ensure(em->bm, BM_FACE); /* we can use this too */
-	vmap = BM_uv_vert_map_create(em->bm, limit, !select_faces, false);
+
+	/* use winding so we don't consider overlapping islands as connected, see T44320 */
+	vmap = BM_uv_vert_map_create(em->bm, limit, !select_faces, true);
 
 	if (vmap == NULL)
 		return;