>>9154419As repeatedly said, you can even check how the older clips were made of a different, softer plastic while the recent ones are made from the same as most other parts these days which simply isn't made for that connection.
Those parts are less shiny and a lot more flexible compared to recent ones, most notable on the square and triangular flag pieces due to their size.
Worst off are pieces made of trans-clear plastic which is even more rigid and you can clearly see how the cracks are developing inside the clip.