[fec] opening rows in FEC files does not seem to work

[midichef]

Small description
FEC files can be opened, but rows cannot be browsed.

Data to reproduce
Using a sample file 1326070.fec.

Steps to reproduce

Expected result
When the user presses Enter, rows should open as in [jsvine's demo video at 13 seconds].(https://asciinema.org/a/Xyh2BFsUaOF0AlHTmMUbqQZPC)

Actual result
When the user presses Enter, open-rows runs, for example, opening the itemization row, as:

column    | value
------------------------
component | itemization
size      | 56958

Configuration

• Does this issue reproduce without any plugins or configuration (using the -N CLI flag)?
  Yes, it reproduces with -N.

• Does this issue reproduce with either the latest release, or with the develop branch?
  Yes, the latest develop.

Additional context
fecfile 0.8.0 installed via pip
Python 3.10.12
Ubuntu 22.04.4