tower of magic inaccessible area

Level 4
Kickstarter Backer Wishing Well Barbarian Wishing Well Druid
2 years ago

As I am reaching the 4th clue in the tower of magic, once I climb down the stairs and push a rock (which falls up, making the 4th clue accessible), a battle with the spiders sometimes starts.  Regardless if a fight starts or not, once I climb down those stairs to get to the rock, the upper area I came from becomes inaccessible.  The ladder no longer allows me to go back up to the prior platform to get to the clue area.