Ansible Kria loop modifier behaviour

I stumbled across a behaviour that I haven’t read or seen in demos etc and wonder if any one can explain what’s happening because its pretty cool.
When I select a new loop length/location in the notes page (Kria, Ansible 1.4.1), by holding down loop modifier and randomly pressing keys, the sequence completely changes. Its like a completely random sequence is generated or the current sequence is shifted along and random notes replace where the original sequence was.
Anyone know what’s happening and how it can be tamed?
Thanks

i should add that there are often multiple notes in a column lit however its the same note that plays on each repetition of the loop.