Edits being reset after "show original" photo

There's a new glitch happening where a particular edit is missing from my presets.  In addition to that, if I apply that edit to any of my photos, and then click the "show original" icon to compare the before and after photos (which I do often), that edit resets back to 0 again.  That edit will also not copy over if I copy the settings from one photo to paste them to another photo.  This is so frustrating!  I think it's just one edit (specifially, it's the Vignette) that this is happening to.  Was this a bug from a recent LR update?  Is there anything I can do to fix it?

For reference, this is happening with Lightroom (Cloud), on my laptop (Windows 10).