somehow I just managed to experience a rare bug (at least never seen before):
I use 128 pattern length and copied last quarter from 96-128 from a track of a pattern before and then pasting it to the next pattern to same track on position 0.
Now if I paste, it always writes the copy-buffer data to one track next to the right, no matter what I do. Will reload now.
Due copy-paste action I also play/stopped a lot…