Lightroom has begun showing JPGs alongside RAWs despite "Treat.." button being unchecked

A couple months ago, LRC begain showing JPGs alongside my RAWs (ORFs). In Preferences, I don't have "Treat JPEG files next to raw files as separate photos" selected. I never have and this never used to be an issue. LRC is now showing me both, which I do not want. As advised by JohanElzenga and others, I tried resetting the Preferences. This made no difference. When I import, the JPGs still show up despite the "Treat..." button being unchecked.

I can solve this by only shooting RAW, but I do sometimes want to shoot both and not have to deal with a very messy LRC Library.

Any ideas or redirects will be greatly appreciated.

Thanks,

Jay

-- I'm using the latest build of LRC on a Mac running Sonoma 14.6.1 & imports are from an Olympus OM-1.