Strange of weight map on custom geograft

JoxiMoon

Hi, I've been making my own genitalia for a long time now, and this isn't the first time. So, I was reworking and recreating them again, and I noticed something strange, for some reason, my weight map edits seem to have stopped working on the main mesh. That is, in Tool Settings mode I see the changes, but as soon as I switch back to the normal weight map viewport, it looks like I never changed anything. Meanwhile, the geoshell on top of the weight map renders normally, it’s the geograft grid itself that’s messing up.

I don’t know what to think anymore, this is the first time I’ve encountered this. Can anyone who’s faced this help me figure out why this might be happening?