It doesn't let me delete or change the names of the buttons either. It clearly wasn't intentional. Thanks anyway : )
I know the source project is available for download, but I have no idea how to fix it.
yeah, there are many bugs, we are fixing them(1-3 days)
It's fixed and updated ! If you don't want to download the new version, you can just make a first empty chip in your project and delete it.