I will not discuss what triggers the bug; I’m simply brining attention to it. There is a bug with Divine Purpose that causes the buff to not be consumed when spending holy power. This results in 0 cost holy power spenders. The bug is only cleared on relog. Warmode was active when the bug was discovered.
Luckily, Hpal spenders are so weak this gives zero competitive advantage.
Video:
streamable .com/vio0sn