Weird Block behaviour (blocking access to inner components ...)

hmm, of course …
I had not realised Option Logic was there …
This does work for populating the options, but there is some dirty CSS to write because FORM component does not have the ‘General’ settings (Z index, position, …), and cannot either be placed into a block (which has the ‘General’ settings) because it breaks data binding.

I still have a big issue with one of the select options :