Runegraft of The Warp does not extend duration of Everlasting Sacrifice

Everlasting sacrifice is a buff marked by the green outline.
Runegraft of The Warp increases buff duration by 30%.

Base duration of Everlasting sacrifice is 4 seconds, and even after applying the rune it does not extend the duration.

I want a 17 chaos refund.

Reference number 3,676,874,793.