[BUG] Invisible dangling depth spider & Connection problem between cave levels

[presto3124]

1. I can't see image of dagling depth spiders in the second level. What I could see was only shadows of them. (It was already mentioned by someone. Sorry, I didn't check that post.)

2. When I tried to go back to the first level of a cave from the second level, I reached another first level which is totally different from what I had seen before entering the second level. And there was a rope toward outworld and no entrance for the second level. (There was anohter entrance for another second level of the cave on the map) I just used that rope and came out the cave. When I tried to go to the cave once again from outworld, I could see the original first level again.