The buttons in my project suddenly stopped working

Godot Version

4.1.1

Question

I have no idea why, but all of the buttons in my project have stopped working, and they now act like labels. When I replaced the buttons, they acted the same way. Could someone lead me to a reason why those buttons might have stopped working?

Do you have something covering the buttons?

Are you applying any Mouse filter in the inspector or through any script?
When you set the filter to “Ignore”, the button wont be clickable