When you hit create, that pattern has been created. But the old patterns still exist so after that you should select the shape instantiated by the wrong old pattern and hit delete. Something will happen then.
Viewing post in tile create function doesn't work.
sorry.. but it create nothing and hitting delete button also not working. Maybe there are some bugs. Clone function is working correctly and i can delete some object only after clone it. Tile creation is totally not working.
I found create button make some object but not selected tile but whole object. Seems strange. I want to make custom patterns.