Hello world!
I had to make some modifications to the built-in form block. First things first, I added a new entry to db.xml for btForm. Then, I coded the new input element to have a new, boolean type setting for the form block. After refreshing the block data from dashboard > block types > form, nothing has happened, i.e. the database table had not been modified. I have created and updated several custom blocks like this before and all had worked fine. Am I missing something when dealing with built-in block types?

While trying to figure out what is happening, I tried editing the files of the form block in several different ways, like for example, renaming the whole folder. To my greatest surprise, everything works fine. Is this normal? I have cleared the C5 cache and the browser cache too and am totally confused about what is going on.