Can not click on Ritual Altar

2/3 Ritual altars completed. Map has zero Mobs. nothing near / guarding this one. it is missing the BIG top part that is clickable.

i got 3 report numbers . since i never did this before. was hoping reporting from game will be sufficient.

the report# are
1,668,413,235
3,984,001,205
1,668,413,235