Ya que he visto que eres de Barcelona, así que me voy a tomar la licencia de relatarte el problema que he hayado en castellano. (If you prefer that I speak in English, just tell me.)
Como puedes ver, el contador se para en 8 cuando debería detenerse en 7. Aún no he encontrado el motivo por el cual esto ocurre así.
Para no tener que andar a colocar nodos y replicar mi programa, puedes cargarlo desde la consola:
graph.configure(JSON.parse("{\"last_node_id\":19,\"last_link_id\":29,\"nodes\":[{\"id\":10,\"type\":\"events/trigger\",\"pos\":[512,340],\"size\":{\"0\":140,\"1\":46},\"flags\":{},\"mode\":0,\"inputs\":[{\"name\":\"in\",\"type\":0,\"link\":25}],\"outputs\":[{\"name\":\"true\",\"type\":-1,\"links\":[13]},{\"name\":\"change\",\"type\":-1,\"links\":null}],\"properties\":{}},{\"id\":15,\"type\":\"events/trigger\",\"pos\":[840,50],\"size\":{\"0\":140,\"1\":46},\"flags\":{},\"mode\":0,\"inputs\":[{\"name\":\"in\",\"type\":0,\"link\":26}],\"outputs\":[{\"name\":\"true\",\"type\":-1,\"links\":[12]},{\"name\":\"change\",\"type\":-1,\"links\":null}],\"properties\":{}},{\"id\":19,\"type\":\"widget/button\",\"pos\":[285,297],\"size\":[164,84],\"flags\":{},\"mode\":0,\"outputs\":[{\"name\":\"\",\"type\":-1,\"links\":[27]},{\"name\":\"\",\"type\":\"boolean\",\"links\":null}],\"properties\":{\"text\":\"Reset\",\"font_size\":30,\"message\":\"\"}},{\"id\":2,\"type\":\"widget/button\",\"pos\":[103,297],\"size\":[164,84],\"flags\":{},\"mode\":0,\"outputs\":[{\"name\":\"\",\"type\":-1,\"links\":[4]},{\"name\":\"\",\"type\":\"boolean\",\"links\":null}],\"properties\":{\"text\":\"Start\",\"font_size\":30,\"message\":\"\"}},{\"id\":1,\"type\":\"events/sequencer\",\"pos\":[329,105],\"size\":{\"0\":140,\"1\":126},\"flags\":{\"horizontal\":true,\"render_box\":false,\"collapsed\":false},\"mode\":0,\"inputs\":[{\"name\":\"\",\"type\":-1,\"link\":4},{\"name\":\"\",\"type\":-1,\"link\":13},{\"name\":\"\",\"type\":-1,\"link\":null},{\"name\":\"\",\"type\":-1,\"link\":null},{\"name\":\"\",\"type\":-1,\"link\":null},{\"name\":\"\",\"type\":-1,\"link\":null}],\"outputs\":[{\"name\":\"\",\"type\":-1,\"links\":[]},{\"name\":\"\",\"type\":-1,\"links\":[28]},{\"name\":\"\",\"type\":-1,\"links\":null},{\"name\":\"\",\"type\":-1,\"links\":null},{\"name\":\"\",\"type\":-1,\"links\":null},{\"name\":\"\",\"type\":-1,\"links\":null}],\"properties\":{}},{\"id\":5,\"type\":\"events/counter\",\"pos\":[510,38],\"size\":{\"0\":140,\"1\":66},\"flags\":{},\"mode\":0,\"inputs\":[{\"name\":\"inc\",\"type\":-1,\"link\":28},{\"name\":\"dec\",\"type\":-1,\"link\":null},{\"name\":\"reset\",\"type\":-1,\"link\":27}],\"outputs\":[{\"name\":\"change\",\"type\":-1,\"links\":null},{\"name\":\"num\",\"type\":\"number\",\"links\":[19,23]}],\"properties\":{}},{\"id\":7,\"type\":\"widget/number\",\"pos\":[533,165],\"size\":[80,60],\"flags\":{\"collapsed\":false},\"mode\":0,\"outputs\":[{\"name\":\"\",\"type\":\"number\",\"links\":[20,24]}],\"properties\":{\"min\":-1000,\"max\":1000,\"value\":6,\"step\":1}},{\"id\":18,\"type\":\"math/condition\",\"pos\":[731,168],\"size\":[80,60],\"flags\":{\"collapsed\":false},\"mode\":0,\"inputs\":[{\"name\":\"A\",\"type\":\"number\",\"link\":23},{\"name\":\"B\",\"type\":\"number\",\"link\":24}],\"outputs\":[{\"name\":\"out\",\"type\":\"boolean\",\"links\":[25]}],\"properties\":{\"A\":8,\"B\":6,\"OP\":\"<=\"}},{\"id\":17,\"type\":\"math/condition\",\"pos\":[729,53],\"size\":[80,60],\"flags\":{\"collapsed\":false},\"mode\":0,\"inputs\":[{\"name\":\"A\",\"type\":\"number\",\"link\":19},{\"name\":\"B\",\"type\":\"number\",\"link\":20}],\"outputs\":[{\"name\":\"out\",\"type\":\"boolean\",\"links\":[26]}],\"properties\":{\"A\":8,\"B\":6,\"OP\":\">\"}},{\"id\":9,\"type\":\"basic/watch\",\"pos\":[1056,50],\"size\":{\"0\":140,\"1\":26},\"flags\":{},\"mode\":0,\"inputs\":[{\"name\":\"value\",\"type\":0,\"link\":12,\"label\":\"null\"}],\"properties\":{}}],\"links\":[[4,2,0,1,0,-1],[12,15,0,9,0,0],[13,10,0,1,1,-1],[19,5,1,17,0,\"number\"],[20,7,0,17,1,\"number\"],[23,5,1,18,0,\"number\"],[24,7,0,18,1,\"number\"],[25,18,0,10,0,0],[26,17,0,15,0,0],[27,19,0,5,2,-1],[28,1,1,5,0,-1]],\"groups\":[],\"config\":{},\"version\":0.4}"));