Spectre bug - ancestral channeler

When trying to spawn the minion, by reserving spirit, nothing happens, it just reserves the spirit and no minion spawn. remove the minion shortly shows the minion for 1 second, and the disapears, but nothing happens while spirit is reserved.

Hi, I've found binding a channeler that appears naturally in a zone/map seems to work fine. Trying to bind ones that appear from chests causes issues.