Blighted Portal Monster Stuck in Terrain

<blockquote class="imgur-embed-pub" lang="en" data-id="a/wQDssUj" ><a href="//imgur.com/a/wQDssUj">Path of Exile Blight Mob Portal Spawn Bug</a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script>





The mob spawn portal for the Sister Cassia Blighted random event bugged out and spawned inside the terrain of a ktash Altar thus making the monster invincible and im unable to kill it to complete the Blighted Tower Defence

i don't know how to post a bb code so ima repost the image link for proof


https://imgur.com/a/wQDssUj