Hi @naidim I'm sorry to hear that you have experienced this issue.
If possible I would recommend loading a previous save before you started the quest and try again, however if this is not possible could you please provide a video to demonstrate the issue.
I would recommend uploading your video to a video sharing platform such as YouTube, you can then copy the URL link into this thread.
Can you also ensure that your latest save is uploaded to the cloud. If you are unsure how to do this there is a support article that you can check ...