Histogram Question

[brandonj12187937]

1. Lightroom Classic 12.1 Release

2. 2019 Macbook Pro OS Ventura 13.1

3. First screenshot shows what my histogram looks like. The lines are all vertical and the image looks very pixelated. When I zoom in on the image, it reloads and then the histogram and image go to how they should. However, if I go to another image and back, the same thing happens every time.

4. The 2nd screenshot is what I expect it to look like every time I go to an image. I shouldn't have to zoom in for it to reload and go to normal. The images are 1:1 previews as well.

Link below is a screen recording of what happens. Any help is appreciated.

https://imgur.com/a/FbUiTzv

[TheDigitalDog]

Does this happen with all or just this one image? 

Can you upload that image to something like Dropbox so we can examine it? 

[brandonj12187937]

Seems to be happening with all my raw files. Here's a dropbox link.

https://www.dropbox.com/s/jjwhdji24i4kiqh/DSCF3334.RAF?dl=0

[TheDigitalDog]

Downloaded, got it into Lightroom Classic. I see those 'spikes' for a split second, then the Histogram updates correctly as you show in the 2nd screen capture. So it seems fine on this end. 

You could try resetting your preferences (see below) or maybe you could convert to DNG or rebuild a new preview (is it 1:1)? Then test. 

Try resetting your Lightroom preferences:
https://helpx.adobe.com/lightroom-classic/help/setting-preferences-lightroom.html
Also see: https://community.adobe.com/t5/lightroom-classic-discussions/important-steps-for-manually-resetting-...

Quit Lightroom Classic.
macOS: Press and hold the Shift + Option keys.
Windows: Press and hold the Shift + Alt keys.
While holding down the keys, launch Lightroom Classic.
When asked, select "Yes". 

[TheDigitalDog]

Oh, I'm on a Mac, too, Ventura. When I move from your image to another in Develop and back, the correct Histogram appears; it doesn't change as you describe. IOW, it is fine on this Mac. 

[brandonj12187937]

Thank you for testing it out on your end. Before I try resetting, do you mind sharing some of your Lightroom preferences/settings and catalog settings? I'm interested to see if anything differs.

[TheDigitalDog]

This is probably the more important one in terms of previews:

[brandonj12187937]

I ended up resetting my preferences and it looks to be doing what you described. The spikes are there for just a second and then they go to normal. Thank you for your help, I really appreciate it!