Lightroom CC does not update grid view with latest edit all of the time.

What kind of edits Steven? Do they update themselves if you wait a bit?

In the example I changed to black and white and this did not update.  I then made an additional edit to light settings and then the grids did update.

I see this occasionally too. I've found that the grid rendering is not always representative of the latest photo edits (or at least it appears that way). This is really frustrating since I like to see how edits look on smaller screens. It seems like it only happens with smaller changes like slight color adjustments.