Although they are monopodial, they do occasionally branch. You need to let the new stem get quite large (at least three leaves) before you divide it into two.Is this a keiki?? Or just new leaves on a weird spot?
It may grow back from a dormant bud.Yesterday I found out that one of my phals has crown rot, all its leaves fell off
cheers DarrelThe old leaves stayed green (and I nearly binned it a couple of times), but after 3 years it eventually grew a new leaf rosette from further back along the caudex.