edit for better example:
Compare putting fireball in black zenith linked to spell totem support, to putting worb in black zenith linked to spell totem support.
fireball: placing the totem inherits the 4 second cd, and the totem itself casts fireball only every 4 seconds.
worb: placing the totem skips the 4 second cd via a bug, and the totem itself channels continuously. If it stops channeling, it waits 4 seconds before starting again.
There are two halves to the behavior, placing the totem, and the behavior of the totem once placed. Mark, you're saying that the totem works as intended once placed. I agree. However, placing the totem is completely bugged with winter orb.