Hi Daryl,
If you post here, please use only the “? Help” button near the tutorial, thank you. So things stay linked and organized. I updated the headline, BTW.
I tested it with the current version, and all worked fine, until the third time, then the Planes where full sized. I restarted Cinema 4D and all went fine again. Of course I tested it many times again, and one time it didn’t work as expected, then I checked all options off, then on again, and I got the individual sized Planes as expected. It “feels” like something might get stuck in the memory, again “feels” means here, I can’t reproduce the problem at will.
Screen capture
https://www.amazon.com/clouddrive/share/r7PpBNVwJ1ZJfSN8F3ACEexKwGlR26I2gEph3bMRpLA
Checking stuff on and off at 00:39, it might help, maybe not. Sorry to be that blurry.
Fingers crossed a restart will help
All the best