Conditional rendering for nested instances / components

I wanted to open this thread one more time if possible. I am not able to solve the conditional rendering in nested/bound groups.
I have a simple true/false bool and want to show or hide an element in an collection.

I tried binding the conditional rendering as well as binding the display.
When unbound/ungrouped it works fine, but as soon as I bind the elements to collection it stops working.
Any Ideas why that is?

Edit: Just found the solution in the guide provided here: Checkboxes within a collection list - #2 by peteletkemansst