Eterra's Blessing cast animation seems to be remove previous cast buffs

When I spam cast Eterra’s Blessing the node safeguard which should last 4 seconds seems to be getting cancelled out in the animation of a new cast. While I have up character UI my res reflects not having this buff at all when the cast animation of this skill. I asked the Dev on the twitch stream and he seems to either believe it is a UI issue with the character UI panel or a bug.