Tone curve missing background Histogram Overlay

[Landon5ECF]

I updated Lightroom today to version 9. I go to edit a black and white negative, and the curve information is gone! It's just a gray mess with no information. I figure I'm doing something wrong, but I don't know what, so any help is appreciated. I'm looking for the graph (?) where I could adjust the white and black points in the curve--there would be a bunch of lines that look like a mountain. Sorry for the low-tech explanation. Thanks!

[daelin_6571]

Hopping on this thread as I have been dealing with a similar issue. Thought it might be a memory limitation but since upgrading RAM I'm still experiencing this.

[Aleke]

Hi @daelin_6571, welcome to the community!
Does this happen with every photo? Could you try resetting the preferences to see if that helps? You can follow this guide:
https://adobe.ly/4o7JADQ
Thanks so much!
Alek