Waystone done but cannot progress in some Directions

Hey, started Mapping today and ran into some annoying (i suppose bug).
Talked about it with friends and googled for a while but i couldnt find anything matching this issue so sorry if its still a repost of a known bug.

So i Completed the Waystone to the middle right of the Screenshot and wanted to go to the left but for some reason i cannot put a stone inside.

As you can also see in the screenshot, i was able to progress towards the top.

(Mainly annyoing bc i dont have a hideout yet and the Hideout is just behind this one)