Greetings Ithandir!
Thank you for reporting your situation regarding the Sacrificial Stone.
In order for our team to properly assess the issue, could you please let us know if you are playing on an Official Server or Private Server please? In case you are playing on a Private Server, are you perhaps using mods?
Thank you in advance!
You’re welcome Ithandir 
Thank you for your information!
In that case, could you send us a video of the problem happening in your game, just so our team could have a better visibility of it please?
Thanks in advance!
Hello,
Can you upload the video to Youtube or to a similar platform and share the link with us?
We appreciate your support. 
Greetings Exile,
Can you please share your saved file with us? You can find it by following:
\Steam\steamapps\common\Conan Exiles\ConanSandbox\Saved
It should be the file named “game” if it’s an Exiled Lands map or “dlc_siptah” for Isle of siptah. Please upload the file to Google drive or to a similar platform and share the link with us.
Thank you in advance.
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