Actually one of the devs reached out to me on it and said they fixed players phasing through the floor. I then updated Crouch Crawl and Roll so they could selectively disable crouching on their end; like when the player is transformed into the robot.The Flamsteed ring is what's causing the issue, but the calamity discord and forum has been mainly unresponsive. Another user confirmed what the issue was and that was all. I'm not sure if they're going to fix it or not. Hopefully they do because your mod adds some really fun changes to the game.
Now, we just wait until Calamity updates.