Ancient vows quest bugged

Hi, as many already reported,

My ancient vow quest seems to be bugged. The altar to put the two relic doesn't work.

Just like a few other threads so I'm putting in this to further raise this issue

I had a similar issue. I could click on the altar, but it would disappear as soon as I moved my mouse cursor off the altar to grab the relic out of my inventory. I was able to complete it by holding down the item pickup key (Default ALT) and then move the second relic out of my inventory and into the altar.