It’s almost certainly intended, and I think we’ll get used to it again like we have been before. Certainly not my favorite change, but I can understand why it was made. It really doesn’t make any sense that we could cast through SCK after all.
However, they do need to fix some unintended interactions. Chi Burst damage/heal events, picking up Chi orbs, and arguably even Roll should not interrupt the channel. (That last one may not be unintentional, but still.)