End of monolith reward rock duplicated and unclickable

I finished the monolith, but the rock at the end has a rotating and a static version and nothing happens when I click it (it does get highlighted when I hover over it).
Log File
also note, that I did check, it’s not that it dropped item but they didn’t show up on the loot filter
the next monolith I could open it but I still have a static rock showing up

I do not know if it’s related or not, but the game crashed when I exited it via the exit to desktop button.
related log