In the Wormbound Catacombs, the save crystal appears to be below the bridge. As in, it appears below the spot it's supposed to be, but I can step "into" it. It doesn't save my game when I click on it from the lower level. The space where it should appear on the upper level is impassable, but in order to save my game I have to click it down though the gaps in the bridge.
I believe I was running version 2.1.15. Let me know what other information you need to replicate this bug.