This is related to another post I’ve made, but this time I’m posting about block scaling rather than materials (as that post seems to have been abandoned). Also related to this one from 5 years ago.
Simply put, a block created under one unit does not adapt well to being converted to another unit. I’ve attached a video showing a block being converted from metres to feet and it suddenly changes size (yes, I chose to maintain size).
This is in Rhino 8 Mac (8.13.24317.13002, 2024-11-12) running on a Mac Studio Max, Sequoia 15.2.