Developer Preview is reset due to "From Metadata" entry.
With Lightroom CC 12.0.1, I found a bug where if we are using the Develop module and make a few changes, the latest preview is working as expected. But suddenly out of nowwhere I get this entry in the History "From Metadata" and then the preview just changes to original image preview. After this there is no way to get the preview with all the changes. Note I do have "Save to XMP" turned on and I suspect that might be interfering with LRCC. Though this worked very well with 11.x.x.
