When adding new configuration entries in tlwebadm, an additional row can be seen in the table behind the pop-up while editing the new entry.
This makes for an inconsistent look, since we use tables to show entries that have already been persisted by the backend. The issue is present on most tlwebadm pages, where we click on table rows to open pop-ups.
Additionally, the table in TLDC⇾Applications (manual) becomes empty while the pop-up is open when creating new entries. A similar behavior can be seen in 4.14 where only the create-new-dialog is present in the table even if there are other entries stored by the backend.
Note that this issue is not seen when editing already stored entries.