Inline edit - keeping the existing data as it is

I am trying to create an edit mode with Custom state. So far so good but just 1 pesky issue

As soon as I hit Edit, and click on a column, the data just disappears. I just want to change say a typo or add more details to a multi line input field without having to retype the entire form.

Anyone any input?

btw I saw Gaby’s video for inline edit and that’s how I reached so far!

Can you take a screenshot or a video of what’s happening exactly?