In v19.0.29, I have all tags visible, which yields a scroll bar (as expected). After entering data in a field which allows for more than one entry (e.g. "Producer") or a text field (e.g. "Description") and clicking the "x" to close the field, the scroll bar disappears. The only way to get it back is to click in a field that uses a dropdown to select values (e.g. Album).
This was working OK in v18.x.xx but now it's not.