I’ll test this on my Octatrack later.
There’s workarounds. As I said upthread, and you said, manual changes work as described. This means you can do most things you’d hope to do in a performance using a mixture of multiple copies of the pattern with different CH.LEN/M.LEN combinations, and using both Chain mode and Manual in a performance. I think this is OK… (but not ideal)… but the manual being wrong, across multiple devices, across multiple releases of the manuals, including the brand new instrument (@elektron) just boggles my mind.
I’ve raised a support ticket, and mentioned it in the Documentation thread.