Hot corners not working on my MacBook Pro running macOS Sequoia 15.4

Same here but I solved the issue by turning off "click wallpaper to reveal desktop" in preferences/Desktop & Dock. Before turning that off my hot corners would reveal the desktop as usual but then when I attempted to select an item on the desktop all my open windows would return and cover everything up. Was very frustrating. I hope that helps someone.

Try restarting.

Doesn't help.

👍🏽

+1