It was one of the big things that came up when that update was released. I haven't played much since then but it's mad to see that hasn't been patched still.
Hey! We have enabled a failsafe in our next update that will prevent this from happening if there are items remaining in a Chest!
Hello OP! On behalf of our team, we agree, and apologize this was the case.
I just wanted to come by and confirm that with our next update, we've now enabled a failsafe meaning that if there are items in a Chest, it will NOT be able to be dismantled.
The update will be coming early 2023 (very soon) and we'll post the full patch notes here as soon as the update drops!
Hey Kunigundeh! Do you mind pinging me ([Norsfell] Sydnee) directly on Discord? I tried to find your post there but could not :c
Usually when a World is not re-joinable, it can be due to the Construction limit as you mentioned in your post. However if you didn't have an enormous amount, I'm wondering if it's something else. If I'm able to get your World number, our team may be able to determine some more information.
However we will have an update coming very soon, so Worlds will be reset to make room for that new content.