I did not realize this was a thing until I just switched to AZERTY which… despite being marketed as being “similar” to QWERTY, is still tripping me up
Edit: since this came up twice: I’m switching since I’m relocating to the French-speaking part of the world & I just happened to want to learn the language/culture, so yeah
What you just described is pretty much exactly my experience with colemak and split keebs too.
When i was learning colemak i decided to take the time to teach myself proper touch typing at the same time. Now i can only touch type colemak on a split ortho. I cant type qwerty at all on it.