Can't save data after edit in View/Edit Data mode

[Sean Dowd]

Browser: Firefox 75.0 (64-bit)
OS: OSX 10.15.4 (19E287)

Reproduce:
Open pgadmin4, navigate to a table, right click -> View/Edit -> All Rows.
Scroll to bottom, enter data (2 columns in this case).
Save button is disabled.