I guess this is the invisible block syndrome.....
No need to worry about the lava below.
![Smile :)](./images/smilies/icon_e_smile.gif)
Just relax and enjoy the beautiful sky.
![Smile :)](./images/smilies/icon_e_smile.gif)
I have seen similar things on Nyleve and one of the RTNP THS maps.
PS. I recommend not jumping to try and find the invisible block. I learned this the hard way.
![Tittering Laugh :titter:](./images/smilies/icon_titter.gif)