Weight paint isn't visible Going into weight paint mode, the weights aren't visible at all. There's not even the 0 weight blue. They're there and working though because I can pose the character, and I can paint because it changes her pose when I do, but I just can't see it at all. I'm sure it's just a simple button I need to press or something but I can't find the solution by searching so that's why I'm posting it here. You can see in my screenshots that I'm in weight paint mode, but no weights are visible, and she can be posed.
In the Viewport Overlays panel, make sure that the Weight Paint Opacity is somewhere above 0: