I’m getting a pretty major issue in that my Simple Grid data disappears from Fluid Field in the Publish screen upon attempting to save where a different element in the Fluid Field has an error. In my specific case, my Simple Grid is also inside a normal Grid which is available to the Fluid Field.
This is a big issue - with large pages, the missing data isn’t easily noticeable and as soon as the user fixes the error in the other field and saves their change, it removes the data from the Simple Grid permanently.
Are you able to replicate this? Feel free to hit me up on slack if you need more info @pyrobob83 and I can give FTP access if needed.