Here are three possible fixes:
1. Apply a fixed height to all rows, as before (My favorite).
2. Show Edit/Delete/Details buttons in the first column rather than the last one.
3. Show two scroll bars, one at the top and another at the bottom.
BTW, I noticed the new dbadmin does not show fields of a certain type, e.g., list:string. The old dbadmin used to show them. I think it would be helpful to keep showing them unless there is a good reason for not doing so.
Thank you,