Hello,
I came across a bug when editing the FeatureTable Javascript widget in my own code, and even the same code found here: https://developers.arcgis.com/javascript/latest/sample-code/widgets-featuretable-editing/.
It seems when you are editing with a larger amount of rows, the "bottom" rows apply the incorrect applyEdits rest call. For instance, when I try to edit the FBI code shown in the screenshot, the row has an objectID of 1763 and when I look at the network request it applies the update to the row for objectID of 319.
Screenshots:
Edit of 1763
