i spoke with obsidian yesterday and i updated them with a video of the bug, they say there is some investigation going on on this particular soft-lock. i'll paste their response:
Thank you for reaching out to us here at Obsidian Support
Really appreciate to reach us to inform the situation you are facing with the quest a path to the Garden, we are currently investigating these incidents related with soft locked quest,
We are happy to know that our game connects with you, so, rest assured, we are going to get to the bottom of this situation so you can start your journey through the Living Lands.
We would like to reproduce the situation on our end, could you please give us the steps you followed before reaching the soft-locked? we would also like a short video reproducing the situation attached to your reply. This will help us a lot in studying the behavior of our game on your device.
Lastly, I'm aware of the hard work you put in to reach this part of the story. However, many players have reported that returning to a previous save game before encountering this bug helps resolve the situation. This is a troubleshooting step you can try while our QA team works on a fix.
We'll be expecting your response to move forward in our investigation. With your help, we'll be able to reach the end of our journey. Envoy
Best regards,
Obsidian Support Team