If a
pure elevator shaft node is the connection to a secret node, the secret is impossible to access.
Currently you can't click an elevator shaft node itself to generate the surrounding instance. You have to spawn a nearby travel node to generate the instance. If the elevator node has no other connection, you have to run to it. When you then find the dynamite location, there is no wall to destroy, just a blockage (bug report reference #341,856,165):
Compare to a very similar secret node. The only difference here is that the elevator shaft node was connected to a node on the left, so you could spawn its instance through that path:
To my memory we used to be able to left click on elevator nodes to generate an instance, so the bug may have been introduced if/when that changed. Otherwise, the bug has likely been here the whole time.