Multiline Input value is empty

Hi there,
I have a multiline input field in a table.
When I click the edit button, the input field is enabled.
After adding some text and clicking the save button, I want to update the value in the DB.
In the debugger, I can see, that the input value seems to be empty, but I don’t know why?!
Can someone help pls?

Can you share a link to the dev mode so I can debug from my end?