If you are judging the image with the thumbnail you have them set to embedded. They will not show edits made in raw. Have to set to HQ (icon right side of screen 2 boxes and down arrow).
Embedded are smaller and faster so you have to decide what is your best option.
Got the same problem.
It was because in raw I activated "open all jpg in raw" (last option - I have a translation in dutch, it may say something different).
The jpg shows (and is) lighter in bridg.