pfSense

Case 1:
a) Edit an existing Alias with n entries - rows 1 to n are displayed, good.
b) Press the Add button, enter data into 1 or more new rows.
c) Decide that you do not want one of those new rows - press its Delete button.
Expected result: The new row disappears.
Actual result: Row n disappears (the last of the original rows)

Case 2:
a) Add a new Alias - row 1 is displayed with no data in it, good.
b) Enter data into row 1
c) Press the Add button, enter data into 1 or more new rows.
d) Decide that you do not want one of those new rows - press its Delete button.
Expected result: The new row disappears.
Actual result: Row 1 disappears

This is "disconcerting" for users, and results in unintended data loss/modification if users are doing add/delete of rows as they decide what they really want in the alias.

Reported in forum: https://forum.pfsense.org/index.php?topic=109554.0