Do you mean Google Chrome? I've tested it on Chrome and the Anvil scrolls correctly on my end. What platform are you playing on, Windows, Linux, Mac, or mobile?
For Caelo, could you clarify what seems off? Are you able to select him? His ability gives a higher light radius and immunity to ground effects. You should see a larger illuminated area underground, and he won't be affected by the Mud layer's backtracking stamina cost or the Ice layer's slippery effect.