For me, all of these exits are functioning. I have tested each one at least twice today and at least twice before uploading. Are you using an old save? It's possible that that could cause the issue.
It might be a good idea to add version data to the saves. (Then if the game is updated it could decide if a save from a previous version is usable, needing translation or not worth the hassle)
Notice that all entrances to caverns from outside areas now lead to dark areas where Peggy will light the lantern again. I assume you have noticed this, but I could see someone thinking they have entered a black non-room perhaps.